diff --git a/applications/debug/locale_test/locale_test.c b/applications/debug/locale_test/locale_test.c
index 003df55dc..a7cbd52f8 100644
--- a/applications/debug/locale_test/locale_test.c
+++ b/applications/debug/locale_test/locale_test.c
@@ -30,7 +30,7 @@ static void locale_test_view_draw_callback(Canvas* canvas, void* _model) {
     }
     canvas_draw_str(canvas, 0, 10, furi_string_get_cstr(tmp_string));
 
-    FuriHalRtcDateTime datetime;
+    DateTime datetime;
     furi_hal_rtc_get_datetime(&datetime);
 
     locale_format_time(tmp_string, &datetime, locale_get_time_format(), false);
diff --git a/applications/debug/unit_tests/datetimelib/datetimelib_test.c b/applications/debug/unit_tests/datetimelib/datetimelib_test.c
new file mode 100644
index 000000000..42bc7dbed
--- /dev/null
+++ b/applications/debug/unit_tests/datetimelib/datetimelib_test.c
@@ -0,0 +1,175 @@
+#include <furi.h>
+#include "../minunit.h"
+
+#include <datetime/datetime.h>
+
+MU_TEST(test_datetime_validate_datetime_correct_min) {
+    DateTime correct_min = {0, 0, 0, 1, 1, 2000, 1};
+    bool result = datetime_validate_datetime(&correct_min);
+
+    mu_assert_int_eq(true, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_correct_max) {
+    DateTime correct_max = {23, 59, 59, 31, 12, 2099, 7};
+    bool result = datetime_validate_datetime(&correct_max);
+
+    mu_assert_int_eq(true, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_second) {
+    DateTime incorrect_sec = {0, 0, 60, 1, 1, 2000, 1};
+    bool result = datetime_validate_datetime(&incorrect_sec);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_minute) {
+    DateTime incorrect_min = {0, 60, 0, 1, 1, 2000, 1};
+    bool result = datetime_validate_datetime(&incorrect_min);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_hour) {
+    DateTime incorrect_hour = {24, 0, 0, 1, 1, 2000, 1};
+    bool result = datetime_validate_datetime(&incorrect_hour);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_day_min) {
+    DateTime incorrect_day_min = {0, 0, 0, 0, 1, 2000, 1};
+    bool result = datetime_validate_datetime(&incorrect_day_min);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_day_max) {
+    DateTime incorrect_day_max = {0, 0, 0, 32, 1, 2000, 1};
+    bool result = datetime_validate_datetime(&incorrect_day_max);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_month_min) {
+    DateTime incorrect_month_min = {0, 0, 0, 1, 0, 2000, 1};
+    bool result = datetime_validate_datetime(&incorrect_month_min);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_month_max) {
+    DateTime incorrect_month_max = {0, 0, 0, 1, 13, 2000, 1};
+    bool result = datetime_validate_datetime(&incorrect_month_max);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_year_min) {
+    DateTime incorrect_year_min = {0, 0, 0, 1, 1, 1999, 1};
+    bool result = datetime_validate_datetime(&incorrect_year_min);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_year_max) {
+    DateTime incorrect_year_max = {0, 0, 0, 1, 1, 2100, 1};
+    bool result = datetime_validate_datetime(&incorrect_year_max);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_weekday_min) {
+    DateTime incorrect_weekday_min = {0, 0, 0, 1, 1, 2000, 0};
+    bool result = datetime_validate_datetime(&incorrect_weekday_min);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST(test_datetime_validate_datetime_incorrect_weekday_max) {
+    DateTime incorrect_weekday_max = {0, 0, 0, 1, 1, 2000, 8};
+    bool result = datetime_validate_datetime(&incorrect_weekday_max);
+
+    mu_assert_int_eq(false, result);
+}
+
+MU_TEST_SUITE(test_datetime_validate_datetime) {
+    MU_RUN_TEST(test_datetime_validate_datetime_correct_min);
+    MU_RUN_TEST(test_datetime_validate_datetime_correct_max);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_second);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_minute);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_hour);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_day_min);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_day_max);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_month_min);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_month_max);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_year_min);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_year_max);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_weekday_min);
+    MU_RUN_TEST(test_datetime_validate_datetime_incorrect_weekday_max);
+}
+
+MU_TEST(test_datetime_timestamp_to_datetime_min) {
+    uint32_t test_value = 0;
+    DateTime min_datetime_expected = {0, 0, 0, 1, 1, 1970, 0};
+
+    DateTime result = {0};
+    datetime_timestamp_to_datetime(test_value, &result);
+
+    mu_assert_mem_eq(&min_datetime_expected, &result, sizeof(result));
+}
+
+MU_TEST(test_datetime_timestamp_to_datetime_max) {
+    uint32_t test_value = UINT32_MAX;
+    DateTime max_datetime_expected = {6, 28, 15, 7, 2, 2106, 0};
+
+    DateTime result = {0};
+    datetime_timestamp_to_datetime(test_value, &result);
+
+    mu_assert_mem_eq(&max_datetime_expected, &result, sizeof(result));
+}
+
+MU_TEST(test_datetime_timestamp_to_datetime_to_timestamp) {
+    uint32_t test_value = random();
+
+    DateTime datetime = {0};
+    datetime_timestamp_to_datetime(test_value, &datetime);
+
+    uint32_t result = datetime_datetime_to_timestamp(&datetime);
+
+    mu_assert_int_eq(test_value, result);
+}
+
+MU_TEST_SUITE(test_datetime_timestamp_to_datetime_suite) {
+    MU_RUN_TEST(test_datetime_timestamp_to_datetime_min);
+    MU_RUN_TEST(test_datetime_timestamp_to_datetime_max);
+    MU_RUN_TEST(test_datetime_timestamp_to_datetime_to_timestamp);
+}
+
+MU_TEST(test_datetime_datetime_to_timestamp_min) {
+    DateTime min_datetime = {0, 0, 0, 1, 1, 1970, 0};
+
+    uint32_t result = datetime_datetime_to_timestamp(&min_datetime);
+    mu_assert_int_eq(0, result);
+}
+
+MU_TEST(test_datetime_datetime_to_timestamp_max) {
+    DateTime max_datetime = {6, 28, 15, 7, 2, 2106, 0};
+
+    uint32_t result = datetime_datetime_to_timestamp(&max_datetime);
+    mu_assert_int_eq(UINT32_MAX, result);
+}
+
+MU_TEST_SUITE(test_datetime_datetime_to_timestamp_suite) {
+    MU_RUN_TEST(test_datetime_datetime_to_timestamp_min);
+    MU_RUN_TEST(test_datetime_datetime_to_timestamp_max);
+}
+
+int run_minunit_test_datetime() {
+    MU_RUN_SUITE(test_datetime_timestamp_to_datetime_suite);
+    MU_RUN_SUITE(test_datetime_datetime_to_timestamp_suite);
+    MU_RUN_SUITE(test_datetime_validate_datetime);
+
+    return MU_EXIT_CODE;
+}
\ No newline at end of file
diff --git a/applications/debug/unit_tests/furi_hal/furi_hal_tests.c b/applications/debug/unit_tests/furi_hal/furi_hal_tests.c
index e3e44291f..a75615d0c 100644
--- a/applications/debug/unit_tests/furi_hal/furi_hal_tests.c
+++ b/applications/debug/unit_tests/furi_hal/furi_hal_tests.c
@@ -214,37 +214,6 @@ MU_TEST(furi_hal_i2c_ext_eeprom) {
     }
 }
 
-MU_TEST(furi_hal_rtc_timestamp2datetime_min) {
-    uint32_t test_value = 0;
-    FuriHalRtcDateTime min_datetime_expected = {0, 0, 0, 1, 1, 1970, 0};
-
-    FuriHalRtcDateTime result = {0};
-    furi_hal_rtc_timestamp_to_datetime(test_value, &result);
-
-    mu_assert_mem_eq(&min_datetime_expected, &result, sizeof(result));
-}
-
-MU_TEST(furi_hal_rtc_timestamp2datetime_max) {
-    uint32_t test_value = UINT32_MAX;
-    FuriHalRtcDateTime max_datetime_expected = {6, 28, 15, 7, 2, 2106, 0};
-
-    FuriHalRtcDateTime result = {0};
-    furi_hal_rtc_timestamp_to_datetime(test_value, &result);
-
-    mu_assert_mem_eq(&max_datetime_expected, &result, sizeof(result));
-}
-
-MU_TEST(furi_hal_rtc_timestamp2datetime2timestamp) {
-    uint32_t test_value = random();
-
-    FuriHalRtcDateTime datetime = {0};
-    furi_hal_rtc_timestamp_to_datetime(test_value, &datetime);
-
-    uint32_t result = furi_hal_rtc_datetime_to_timestamp(&datetime);
-
-    mu_assert_int_eq(test_value, result);
-}
-
 MU_TEST_SUITE(furi_hal_i2c_int_suite) {
     MU_SUITE_CONFIGURE(&furi_hal_i2c_int_setup, &furi_hal_i2c_int_teardown);
     MU_RUN_TEST(furi_hal_i2c_int_1b);
@@ -258,15 +227,8 @@ MU_TEST_SUITE(furi_hal_i2c_ext_suite) {
     MU_RUN_TEST(furi_hal_i2c_ext_eeprom);
 }
 
-MU_TEST_SUITE(furi_hal_rtc_datetime_suite) {
-    MU_RUN_TEST(furi_hal_rtc_timestamp2datetime_min);
-    MU_RUN_TEST(furi_hal_rtc_timestamp2datetime_max);
-    MU_RUN_TEST(furi_hal_rtc_timestamp2datetime2timestamp);
-}
-
 int run_minunit_test_furi_hal() {
     MU_RUN_SUITE(furi_hal_i2c_int_suite);
     MU_RUN_SUITE(furi_hal_i2c_ext_suite);
-    MU_RUN_SUITE(furi_hal_rtc_datetime_suite);
     return MU_EXIT_CODE;
 }
diff --git a/applications/debug/unit_tests/test_index.c b/applications/debug/unit_tests/test_index.c
index 7ae9ca03d..60132a161 100644
--- a/applications/debug/unit_tests/test_index.c
+++ b/applications/debug/unit_tests/test_index.c
@@ -26,6 +26,7 @@ int run_minunit_test_protocol_dict();
 int run_minunit_test_lfrfid_protocols();
 int run_minunit_test_nfc();
 int run_minunit_test_bit_lib();
+int run_minunit_test_datetime();
 int run_minunit_test_float_tools();
 int run_minunit_test_bt();
 int run_minunit_test_dialogs_file_browser_options();
@@ -57,6 +58,7 @@ const UnitTest unit_tests[] = {
     {.name = "protocol_dict", .entry = run_minunit_test_protocol_dict},
     {.name = "lfrfid", .entry = run_minunit_test_lfrfid_protocols},
     {.name = "bit_lib", .entry = run_minunit_test_bit_lib},
+    {.name = "datetime", .entry = run_minunit_test_datetime},
     {.name = "float_tools", .entry = run_minunit_test_float_tools},
     {.name = "bt", .entry = run_minunit_test_bt},
     {.name = "dialogs_file_browser_options",
diff --git a/applications/main/archive/helpers/archive_browser.h b/applications/main/archive/helpers/archive_browser.h
index 0c3d864d1..37c05da30 100644
--- a/applications/main/archive/helpers/archive_browser.h
+++ b/applications/main/archive/helpers/archive_browser.h
@@ -36,6 +36,7 @@ static const char* known_ext[] = {
     [ArchiveFileTypeUpdateManifest] = ".fuf",
     [ArchiveFileTypeFolder] = "?",
     [ArchiveFileTypeUnknown] = "*",
+    [ArchiveFileTypeAppOrJs] = ".fap|.js",
 };
 
 static const ArchiveFileTypeEnum known_type[] = {
@@ -48,7 +49,7 @@ static const ArchiveFileTypeEnum known_type[] = {
     [ArchiveTabInfrared] = ArchiveFileTypeInfrared,
     [ArchiveTabBadUsb] = ArchiveFileTypeBadUsb,
     [ArchiveTabU2f] = ArchiveFileTypeU2f,
-    [ArchiveTabApplications] = ArchiveFileTypeApplication,
+    [ArchiveTabApplications] = ArchiveFileTypeAppOrJs,
     [ArchiveTabInternal] = ArchiveFileTypeUnknown,
     [ArchiveTabBrowser] = ArchiveFileTypeUnknown,
 };
diff --git a/applications/main/archive/helpers/archive_files.h b/applications/main/archive/helpers/archive_files.h
index c1ea370e0..a4ef5920b 100644
--- a/applications/main/archive/helpers/archive_files.h
+++ b/applications/main/archive/helpers/archive_files.h
@@ -22,6 +22,7 @@ typedef enum {
     ArchiveFileTypeJS,
     ArchiveFileTypeFolder,
     ArchiveFileTypeUnknown,
+    ArchiveFileTypeAppOrJs,
     ArchiveFileTypeLoading,
 } ArchiveFileTypeEnum;
 
diff --git a/applications/main/archive/views/archive_browser_view.c b/applications/main/archive/views/archive_browser_view.c
index 7b9e923cf..6e3e8c5ce 100644
--- a/applications/main/archive/views/archive_browser_view.c
+++ b/applications/main/archive/views/archive_browser_view.c
@@ -39,6 +39,7 @@ static const Icon* ArchiveItemIcons[] = {
     [ArchiveFileTypeUnknown] = &I_unknown_10px,
     [ArchiveFileTypeLoading] = &I_loading_10px,
     [ArchiveFileTypeJS] = &I_js_script_10px,
+    [ArchiveFileTypeAppOrJs] = &I_unknown_10px,
 };
 
 void archive_browser_set_callback(
diff --git a/applications/main/clock_app/clock_app.c b/applications/main/clock_app/clock_app.c
index d2c178903..8f4bbd8df 100644
--- a/applications/main/clock_app/clock_app.c
+++ b/applications/main/clock_app/clock_app.c
@@ -24,9 +24,9 @@ static void clock_render_callback(Canvas* const canvas, void* ctx) {
         return;
     }
 
-    FuriHalRtcDateTime curr_dt;
+    DateTime curr_dt;
     furi_hal_rtc_get_datetime(&curr_dt);
-    uint32_t curr_ts = furi_hal_rtc_datetime_to_timestamp(&curr_dt);
+    uint32_t curr_ts = datetime_datetime_to_timestamp(&curr_dt);
 
     char time_string[TIME_LEN];
     char date_string[DATE_LEN];
@@ -191,9 +191,9 @@ int32_t clock_app(void* p) {
                 case InputKeyOk:;
                     // START/STOP TIMER
 
-                    FuriHalRtcDateTime curr_dt;
+                    DateTime curr_dt;
                     furi_hal_rtc_get_datetime(&curr_dt);
-                    uint32_t curr_ts = furi_hal_rtc_datetime_to_timestamp(&curr_dt);
+                    uint32_t curr_ts = datetime_datetime_to_timestamp(&curr_dt);
 
                     if(plugin_state->timer_running) {
                         // Update stopped seconds
diff --git a/applications/main/clock_app/clock_app.h b/applications/main/clock_app/clock_app.h
index 693bdfac0..74648ba33 100644
--- a/applications/main/clock_app/clock_app.h
+++ b/applications/main/clock_app/clock_app.h
@@ -30,7 +30,7 @@ typedef struct {
 typedef struct {
     LocaleDateFormat date_format;
     LocaleTimeFormat time_format;
-    FuriHalRtcDateTime datetime;
+    DateTime datetime;
     FuriMutex* mutex;
     FuriMessageQueue* event_queue;
     uint32_t timer_start_timestamp;
diff --git a/applications/main/nfc/plugins/supported_cards/clipper.c b/applications/main/nfc/plugins/supported_cards/clipper.c
index c24043be0..62d06e6ef 100644
--- a/applications/main/nfc/plugins/supported_cards/clipper.c
+++ b/applications/main/nfc/plugins/supported_cards/clipper.c
@@ -25,7 +25,7 @@
 
 #include <bit_lib.h>
 #include <applications/services/locale/locale.h>
-#include <furi_hal_rtc.h>
+#include <datetime.h>
 #include <inttypes.h>
 
 //
@@ -173,7 +173,7 @@ static void furi_string_cat_timestamp(
     const char* date_hdr,
     const char* time_hdr,
     uint32_t tmst_1900);
-static void epoch_1900_datetime_to_furi(uint32_t seconds, FuriHalRtcDateTime* out);
+static void epoch_1900_datetime_to_furi(uint32_t seconds, DateTime* out);
 static bool get_file_contents(
     const MfDesfireApplication* app,
     const MfDesfireFileId* id,
@@ -528,7 +528,7 @@ static void furi_string_cat_timestamp(
     const char* date_hdr,
     const char* time_hdr,
     uint32_t tmst_1900) {
-    FuriHalRtcDateTime tm;
+    DateTime tm;
 
     epoch_1900_datetime_to_furi(tmst_1900, &tm);
 
@@ -551,7 +551,7 @@ static void furi_string_cat_timestamp(
 }
 
 // Convert a "1900"-based timestamp to Furi time, assuming a UTC/GMT timezone.
-static void epoch_1900_datetime_to_furi(uint32_t seconds, FuriHalRtcDateTime* out) {
+static void epoch_1900_datetime_to_furi(uint32_t seconds, DateTime* out) {
     uint16_t year, month, day, hour, minute, second;
 
     // Calculate absolute number of days elapsed since the 1900 epoch
@@ -569,17 +569,17 @@ static void epoch_1900_datetime_to_furi(uint32_t seconds, FuriHalRtcDateTime* ou
     //
 
     for(year = 1900;; year++) {
-        uint16_t year_days = furi_hal_rtc_get_days_per_year(year);
+        uint16_t year_days = datetime_get_days_per_year(year);
         if(absolute_days >= year_days)
             absolute_days -= year_days;
         else
             break;
     }
 
-    bool is_leap = furi_hal_rtc_is_leap_year(year);
+    bool is_leap = datetime_is_leap_year(year);
 
     for(month = 1;; month++) {
-        uint8_t days_in_month = furi_hal_rtc_get_days_per_month(is_leap, month);
+        uint8_t days_in_month = datetime_get_days_per_month(is_leap, month);
         if(absolute_days >= days_in_month)
             absolute_days -= days_in_month;
         else
diff --git a/applications/main/nfc/plugins/supported_cards/emv.c b/applications/main/nfc/plugins/supported_cards/emv.c
index 0f2c04c45..8bef98c74 100644
--- a/applications/main/nfc/plugins/supported_cards/emv.c
+++ b/applications/main/nfc/plugins/supported_cards/emv.c
@@ -23,8 +23,6 @@
 #include "protocols/emv/emv.h"
 #include "helpers/nfc_emv_parser.h"
 
-#include <furi_hal_rtc.h>
-
 #define TAG "EMV"
 
 bool emv_get_currency_name(uint16_t cur_code, FuriString* currency_name) {
diff --git a/applications/main/nfc/plugins/supported_cards/itso.c b/applications/main/nfc/plugins/supported_cards/itso.c
index 94d258025..ea7314048 100644
--- a/applications/main/nfc/plugins/supported_cards/itso.c
+++ b/applications/main/nfc/plugins/supported_cards/itso.c
@@ -5,7 +5,7 @@
 #include <lib/nfc/protocols/mf_desfire/mf_desfire.h>
 
 #include <applications/services/locale/locale.h>
-#include <furi_hal_rtc.h>
+#include <datetime.h>
 
 static const MfDesfireApplicationId itso_app_id = {.data = {0x16, 0x02, 0xa0}};
 static const MfDesfireFileId itso_file_id = 0x0f;
@@ -87,8 +87,8 @@ static bool itso_parse(const NfcDevice* device, FuriString* parsed_data) {
             furi_string_push_back(parsed_data, ' ');
         }
 
-        FuriHalRtcDateTime timestamp = {0};
-        furi_hal_rtc_timestamp_to_datetime(unixTimestamp, &timestamp);
+        DateTime timestamp = {0};
+        datetime_timestamp_to_datetime(unixTimestamp, &timestamp);
         FuriString* timestamp_str = furi_string_alloc();
         locale_format_date(timestamp_str, &timestamp, locale_get_date_format(), "-");
 
diff --git a/applications/main/nfc/plugins/supported_cards/kazan.c b/applications/main/nfc/plugins/supported_cards/kazan.c
index 361f7826b..ffd3a4871 100644
--- a/applications/main/nfc/plugins/supported_cards/kazan.c
+++ b/applications/main/nfc/plugins/supported_cards/kazan.c
@@ -22,7 +22,7 @@
 #include <nfc/protocols/mf_classic/mf_classic_poller_sync.h>
 
 #include <bit_lib.h>
-#include <furi_hal_rtc.h>
+#include <datetime.h>
 
 #define TAG "Kazan"
 
@@ -282,12 +282,12 @@ static bool kazan_parse(const NfcDevice* device, FuriString* parsed_data) {
         enum SubscriptionType subscription_type =
             get_subscription_type(block_start_ptr[0], tariff_name);
 
-        FuriHalRtcDateTime valid_from;
+        DateTime valid_from;
         valid_from.year = 2000 + block_start_ptr[1];
         valid_from.month = block_start_ptr[2];
         valid_from.day = block_start_ptr[3];
 
-        FuriHalRtcDateTime valid_to;
+        DateTime valid_to;
         valid_to.year = 2000 + block_start_ptr[4];
         valid_to.month = block_start_ptr[5];
         valid_to.day = block_start_ptr[6];
@@ -295,7 +295,7 @@ static bool kazan_parse(const NfcDevice* device, FuriString* parsed_data) {
         const uint8_t last_trip_block_number = 2;
         block_start_ptr = &data->block[start_block_num + last_trip_block_number].data[1];
 
-        FuriHalRtcDateTime last_trip;
+        DateTime last_trip;
         last_trip.year = 2000 + block_start_ptr[0];
         last_trip.month = block_start_ptr[1];
         last_trip.day = block_start_ptr[2];
diff --git a/applications/main/nfc/plugins/supported_cards/mykey.c b/applications/main/nfc/plugins/supported_cards/mykey.c
index 8e2d5cf11..70b9fa6a9 100644
--- a/applications/main/nfc/plugins/supported_cards/mykey.c
+++ b/applications/main/nfc/plugins/supported_cards/mykey.c
@@ -1,9 +1,10 @@
 #include "nfc_supported_card_plugin.h"
 #include <flipper_application.h>
 
-#include <machine/endian.h>
 #include <nfc/protocols/st25tb/st25tb.h>
 
+#include <machine/endian.h>
+
 #define TAG "MyKey"
 
 const uint32_t blankBlock18 = 0x480FCD8F, blankBlock19 = 0x070082C0;
diff --git a/applications/main/nfc/plugins/supported_cards/opal.c b/applications/main/nfc/plugins/supported_cards/opal.c
index 4ec38208c..f6a4d22a2 100644
--- a/applications/main/nfc/plugins/supported_cards/opal.c
+++ b/applications/main/nfc/plugins/supported_cards/opal.c
@@ -34,7 +34,7 @@
 #include <lib/nfc/protocols/mf_desfire/mf_desfire.h>
 
 #include <applications/services/locale/locale.h>
-#include <furi_hal_rtc.h>
+#include <datetime.h>
 
 static const MfDesfireApplicationId opal_app_id = {.data = {0x31, 0x45, 0x53}};
 
@@ -78,11 +78,11 @@ typedef struct __attribute__((__packed__)) {
 
 static_assert(sizeof(OpalFile) == 16, "OpalFile");
 
-// Converts an Opal timestamp to FuriHalRtcDateTime.
+// Converts an Opal timestamp to DateTime.
 //
 // Opal measures days since 1980-01-01 and minutes since midnight, and presumes
 // all days are 1440 minutes.
-static void opal_date_time_to_furi(uint16_t days, uint16_t minutes, FuriHalRtcDateTime* out) {
+static void opal_date_time_to_furi(uint16_t days, uint16_t minutes, DateTime* out) {
     out->year = 1980;
     out->month = 1;
     // 1980-01-01 is a Tuesday
@@ -93,7 +93,7 @@ static void opal_date_time_to_furi(uint16_t days, uint16_t minutes, FuriHalRtcDa
 
     // What year is it?
     for(;;) {
-        const uint16_t num_days_in_year = furi_hal_rtc_get_days_per_year(out->year);
+        const uint16_t num_days_in_year = datetime_get_days_per_year(out->year);
         if(days < num_days_in_year) break;
         days -= num_days_in_year;
         out->year++;
@@ -104,8 +104,8 @@ static void opal_date_time_to_furi(uint16_t days, uint16_t minutes, FuriHalRtcDa
 
     for(;;) {
         // What month is it?
-        const bool is_leap = furi_hal_rtc_is_leap_year(out->year);
-        const uint8_t num_days_in_month = furi_hal_rtc_get_days_per_month(is_leap, out->month);
+        const bool is_leap = datetime_is_leap_year(out->year);
+        const uint8_t num_days_in_month = datetime_get_days_per_month(is_leap, out->month);
         if(days <= num_days_in_month) break;
         days -= num_days_in_month;
         out->month++;
@@ -154,7 +154,7 @@ static bool opal_parse(const NfcDevice* device, FuriString* parsed_data) {
         const uint8_t balance_cents = balance % 100;
         const int32_t balance_dollars = balance / 100;
 
-        FuriHalRtcDateTime timestamp;
+        DateTime timestamp;
         opal_date_time_to_furi(opal_file->days, opal_file->minutes, &timestamp);
 
         // Usages 4..6 associated with the Manly Ferry, which correspond to
diff --git a/applications/main/nfc/plugins/supported_cards/social_moscow.c b/applications/main/nfc/plugins/supported_cards/social_moscow.c
index 673a67d4b..6f26cf833 100644
--- a/applications/main/nfc/plugins/supported_cards/social_moscow.c
+++ b/applications/main/nfc/plugins/supported_cards/social_moscow.c
@@ -4,7 +4,7 @@
 #include <nfc/protocols/mf_classic/mf_classic_poller_sync.h>
 
 #include <bit_lib.h>
-#include <furi_hal_rtc.h>
+#include <datetime.h>
 
 #define TAG "Social_Moscow"
 
@@ -61,24 +61,24 @@ static const MfClassicKeyPair social_moscow_4k_keys[] = {
 
 #define TOPBIT(X) (1 << ((X)-1))
 
-void from_days_to_datetime(uint16_t days, FuriHalRtcDateTime* datetime, uint16_t start_year) {
+void from_days_to_datetime(uint16_t days, DateTime* datetime, uint16_t start_year) {
     uint32_t timestamp = days * 24 * 60 * 60;
-    FuriHalRtcDateTime start_datetime = {0};
+    DateTime start_datetime = {0};
     start_datetime.year = start_year - 1;
     start_datetime.month = 12;
     start_datetime.day = 31;
-    timestamp += furi_hal_rtc_datetime_to_timestamp(&start_datetime);
-    furi_hal_rtc_timestamp_to_datetime(timestamp, datetime);
+    timestamp += datetime_datetime_to_timestamp(&start_datetime);
+    datetime_timestamp_to_datetime(timestamp, datetime);
 }
 
-void from_minutes_to_datetime(uint32_t minutes, FuriHalRtcDateTime* datetime, uint16_t start_year) {
+void from_minutes_to_datetime(uint32_t minutes, DateTime* datetime, uint16_t start_year) {
     uint32_t timestamp = minutes * 60;
-    FuriHalRtcDateTime start_datetime = {0};
+    DateTime start_datetime = {0};
     start_datetime.year = start_year - 1;
     start_datetime.month = 12;
     start_datetime.day = 31;
-    timestamp += furi_hal_rtc_datetime_to_timestamp(&start_datetime);
-    furi_hal_rtc_timestamp_to_datetime(timestamp, datetime);
+    timestamp += datetime_datetime_to_timestamp(&start_datetime);
+    datetime_timestamp_to_datetime(timestamp, datetime);
 }
 
 bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
@@ -221,10 +221,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_extended,
             card_crc16_2);
         card_validator = card_validator1 * 1024 + card_validator2;
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_valid_by_date, &card_use_before_date_s, 1992);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_start_trip_date)*24 * 60 + card_start_trip_time,
             &card_start_trip_minutes_s,
@@ -283,7 +283,7 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_hash,
             card_valid_from_date,
             card_rfu3);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 1992);
 
         furi_string_printf(
@@ -336,10 +336,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_transport_type3,
             card_transport_type4,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date - 1, &card_use_before_date_s, 2016);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             card_start_trip_minutes - (2 * 24 * 60), &card_start_trip_minutes_s, 2016);
         furi_string_printf(
@@ -397,9 +397,9 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_transport_type,
             card_rfu3,
             card_transfer_in_metro);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date - 1, &card_use_before_date_s, 1992);
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_start_trip_date - 1) * 24 * 60 + card_start_trip_time,
             &card_start_trip_minutes_s,
@@ -478,9 +478,9 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_transport_type2,
             card_rfu5,
             card_transfer_in_metro);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date - 1, &card_use_before_date_s, 1992);
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_start_trip_date - 1) * 24 * 60 + card_start_trip_time,
             &card_start_trip_minutes_s,
@@ -548,10 +548,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_blocked,
             card_zoo,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date - 1, &card_use_before_date_s, 1992);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             card_start_trip_minutes - (2 * 24 * 60), &card_start_trip_minutes_s, 1992);
         furi_string_printf(
@@ -618,10 +618,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_blocked,
             card_extended,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date - 1, &card_use_before_date_s, 2016);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_valid_to_date - 1) * 24 * 60 + card_valid_for_minutes -
                 card_start_trip_neg_minutes,
@@ -684,10 +684,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_transport_type3,
             card_transport_type4,
             card_blocked);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 1992);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(card_start_trip_minutes, &card_start_trip_minutes_s, 2016);
         furi_string_printf(
             result,
@@ -760,10 +760,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_blocked,
             card_extended,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 2016);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_use_before_date + 1) * 24 * 60 + card_valid_for_minutes -
                 card_start_trip_neg_minutes,
@@ -825,11 +825,11 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_route,
             card_passages_ground_transport,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
 
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 2019);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             card_start_trip_minutes - (24 * 60), &card_start_trip_minutes_s, 2019);
         furi_string_printf(
@@ -893,10 +893,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_extended,
             card_route,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date - 1, &card_use_before_date_s, 2019);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             card_valid_from_date + card_valid_for_minutes - card_start_trip_neg_minutes - 24 * 60,
             &card_start_trip_minutes_s,
@@ -959,7 +959,7 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_app_code4,
             card_type4,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_valid_by_date - 1, &card_use_before_date_s, 1992);
 
         furi_string_printf(
@@ -995,7 +995,7 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_valid_to_minutes,
             card_valid_by_date,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_valid_by_date - 1, &card_use_before_date_s, 1992);
 
         furi_string_printf(
diff --git a/applications/main/nfc/plugins/supported_cards/troika.c b/applications/main/nfc/plugins/supported_cards/troika.c
index bc3992a39..991d5be09 100644
--- a/applications/main/nfc/plugins/supported_cards/troika.c
+++ b/applications/main/nfc/plugins/supported_cards/troika.c
@@ -4,7 +4,7 @@
 #include <nfc/protocols/mf_classic/mf_classic_poller_sync.h>
 
 #include <bit_lib.h>
-#include <furi_hal_rtc.h>
+#include <datetime.h>
 
 #define TAG "Troika"
 
@@ -62,24 +62,24 @@ static const MfClassicKeyPair troika_4k_keys[] = {
 
 #define TOPBIT(X) (1 << ((X)-1))
 
-void from_days_to_datetime(uint16_t days, FuriHalRtcDateTime* datetime, uint16_t start_year) {
+void from_days_to_datetime(uint16_t days, DateTime* datetime, uint16_t start_year) {
     uint32_t timestamp = days * 24 * 60 * 60;
-    FuriHalRtcDateTime start_datetime = {0};
+    DateTime start_datetime = {0};
     start_datetime.year = start_year - 1;
     start_datetime.month = 12;
     start_datetime.day = 31;
-    timestamp += furi_hal_rtc_datetime_to_timestamp(&start_datetime);
-    furi_hal_rtc_timestamp_to_datetime(timestamp, datetime);
+    timestamp += datetime_datetime_to_timestamp(&start_datetime);
+    datetime_timestamp_to_datetime(timestamp, datetime);
 }
 
-void from_minutes_to_datetime(uint32_t minutes, FuriHalRtcDateTime* datetime, uint16_t start_year) {
+void from_minutes_to_datetime(uint32_t minutes, DateTime* datetime, uint16_t start_year) {
     uint32_t timestamp = minutes * 60;
-    FuriHalRtcDateTime start_datetime = {0};
+    DateTime start_datetime = {0};
     start_datetime.year = start_year - 1;
     start_datetime.month = 12;
     start_datetime.day = 31;
-    timestamp += furi_hal_rtc_datetime_to_timestamp(&start_datetime);
-    furi_hal_rtc_timestamp_to_datetime(timestamp, datetime);
+    timestamp += datetime_datetime_to_timestamp(&start_datetime);
+    datetime_timestamp_to_datetime(timestamp, datetime);
 }
 
 bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
@@ -170,10 +170,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
         if(card_valid_by_date == 0) {
             return false;
         }
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_valid_by_date, &card_use_before_date_s, 1992);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_start_trip_date)*24 * 60 + card_start_trip_time,
             &card_start_trip_minutes_s,
@@ -247,10 +247,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_extended,
             card_crc16_2);
         card_validator = card_validator1 * 1024 + card_validator2;
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_valid_by_date, &card_use_before_date_s, 1992);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_start_trip_date)*24 * 60 + card_start_trip_time,
             &card_start_trip_minutes_s,
@@ -309,7 +309,7 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_hash,
             card_valid_from_date,
             card_rfu3);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 1992);
 
         furi_string_printf(
@@ -362,10 +362,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_transport_type3,
             card_transport_type4,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 2016);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(card_start_trip_minutes, &card_start_trip_minutes_s, 2016);
         furi_string_printf(
             result,
@@ -422,9 +422,9 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_transport_type,
             card_rfu3,
             card_transfer_in_metro);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 1992);
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_start_trip_date)*24 * 60 + card_start_trip_time,
             &card_start_trip_minutes_s,
@@ -503,9 +503,9 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_transport_type2,
             card_rfu5,
             card_transfer_in_metro);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 1992);
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_start_trip_date)*24 * 60 + card_start_trip_time,
             &card_start_trip_minutes_s,
@@ -573,10 +573,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_blocked,
             card_zoo,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 1992);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(card_start_trip_minutes, &card_start_trip_minutes_s, 1992);
         furi_string_printf(
             result,
@@ -642,10 +642,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_blocked,
             card_extended,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 2016);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_valid_to_date)*24 * 60 + card_valid_for_minutes - card_start_trip_neg_minutes,
             &card_start_trip_minutes_s,
@@ -707,10 +707,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_transport_type3,
             card_transport_type4,
             card_blocked);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 1992);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(card_start_trip_minutes, &card_start_trip_minutes_s, 2016);
         furi_string_printf(
             result,
@@ -783,10 +783,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_blocked,
             card_extended,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 2016);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             (card_use_before_date + 1) * 24 * 60 + card_valid_for_minutes -
                 card_start_trip_neg_minutes,
@@ -848,11 +848,11 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_route,
             card_passages_ground_transport,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
 
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 2019);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(card_start_trip_minutes, &card_start_trip_minutes_s, 2019);
         furi_string_printf(
             result,
@@ -915,10 +915,10 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_extended,
             card_route,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_use_before_date, &card_use_before_date_s, 2019);
 
-        FuriHalRtcDateTime card_start_trip_minutes_s = {0};
+        DateTime card_start_trip_minutes_s = {0};
         from_minutes_to_datetime(
             card_valid_from_date + card_valid_for_minutes - card_start_trip_neg_minutes,
             &card_start_trip_minutes_s,
@@ -981,7 +981,7 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_app_code4,
             card_type4,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_valid_by_date, &card_use_before_date_s, 1992);
 
         furi_string_printf(
@@ -1017,7 +1017,7 @@ bool parse_transport_block(const MfClassicBlock* block, FuriString* result) {
             card_valid_to_minutes,
             card_valid_by_date,
             card_hash);
-        FuriHalRtcDateTime card_use_before_date_s = {0};
+        DateTime card_use_before_date_s = {0};
         from_days_to_datetime(card_valid_by_date, &card_use_before_date_s, 1992);
 
         furi_string_printf(
diff --git a/applications/main/nfc/plugins/supported_cards/two_cities.c b/applications/main/nfc/plugins/supported_cards/two_cities.c
index 93fd55db7..c957a9c43 100644
--- a/applications/main/nfc/plugins/supported_cards/two_cities.c
+++ b/applications/main/nfc/plugins/supported_cards/two_cities.c
@@ -1,11 +1,10 @@
 #include "nfc_supported_card_plugin.h"
-
 #include <flipper_application/flipper_application.h>
 
-#include <nfc/nfc_device.h>
-#include <bit_lib.h>
 #include <nfc/protocols/mf_classic/mf_classic_poller_sync.h>
 
+#include <bit_lib.h>
+
 #define TAG "TwoCities"
 
 typedef struct {
diff --git a/applications/main/nfc/plugins/supported_cards/umarsh.c b/applications/main/nfc/plugins/supported_cards/umarsh.c
index 959b2eeb0..9ee8e48ce 100644
--- a/applications/main/nfc/plugins/supported_cards/umarsh.c
+++ b/applications/main/nfc/plugins/supported_cards/umarsh.c
@@ -29,11 +29,11 @@
 #include "protocols/mf_classic/mf_classic.h"
 
 #include <bit_lib.h>
-#include <furi_hal_rtc.h>
+#include <datetime.h>
 
 #define TAG "Umarsh"
 
-bool parse_datetime(uint16_t date, FuriHalRtcDateTime* result) {
+bool parse_datetime(uint16_t date, DateTime* result) {
     result->year = 2000 + (date >> 9);
     result->month = date >> 5 & 0x0F;
     result->day = date & 0x1F;
@@ -81,13 +81,13 @@ static bool umarsh_parse(const NfcDevice* device, FuriString* parsed_data) {
         const uint16_t balance_rub = (bit_lib_bytes_to_num_be(block_start_ptr + 8, 2)) & 0x7FFF;
         const uint8_t balance_kop = bit_lib_bytes_to_num_be(block_start_ptr + 10, 1) & 0x7F;
 
-        FuriHalRtcDateTime expiry_datetime;
+        DateTime expiry_datetime;
         bool is_expiry_datetime_valid = parse_datetime(expiry_date, &expiry_datetime);
 
-        FuriHalRtcDateTime valid_to_datetime;
+        DateTime valid_to_datetime;
         bool is_valid_to_datetime_valid = parse_datetime(valid_to, &valid_to_datetime);
 
-        FuriHalRtcDateTime last_refill_datetime;
+        DateTime last_refill_datetime;
         bool is_last_refill_datetime_valid =
             parse_datetime(last_refill_date, &last_refill_datetime);
 
diff --git a/applications/main/nfc/plugins/supported_cards/zolotaya_korona.c b/applications/main/nfc/plugins/supported_cards/zolotaya_korona.c
index e1aa9abcf..5ca9b3517 100644
--- a/applications/main/nfc/plugins/supported_cards/zolotaya_korona.c
+++ b/applications/main/nfc/plugins/supported_cards/zolotaya_korona.c
@@ -97,8 +97,8 @@ static bool zolotaya_korona_parse(const NfcDevice* device, FuriString* parsed_da
         const uint8_t last_refill_amount_kop = last_refill_amount % 100;
         const uint16_t refill_counter = bit_lib_bytes_to_num_le(block_start_ptr + 10, 2);
 
-        FuriHalRtcDateTime last_refill_datetime = {0};
-        furi_hal_rtc_timestamp_to_datetime(last_refill_timestamp, &last_refill_datetime);
+        DateTime last_refill_datetime = {0};
+        datetime_timestamp_to_datetime(last_refill_timestamp, &last_refill_datetime);
 
         // block 2: trip block
         block_start_ptr = &data->block[start_trip_block_number + 2].data[0];
@@ -110,8 +110,8 @@ static bool zolotaya_korona_parse(const NfcDevice* device, FuriString* parsed_da
         const uint32_t prev_balance_rub = prev_balance / 100;
         const uint8_t prev_balance_kop = prev_balance % 100;
 
-        FuriHalRtcDateTime last_trip_datetime = {0};
-        furi_hal_rtc_timestamp_to_datetime(last_trip_timestamp, &last_trip_datetime);
+        DateTime last_trip_datetime = {0};
+        datetime_timestamp_to_datetime(last_trip_timestamp, &last_trip_datetime);
 
         // PARSE DATA FROM PURSE SECTOR
         const uint8_t start_purse_block_number =
diff --git a/applications/main/nfc/plugins/supported_cards/zolotaya_korona_online.c b/applications/main/nfc/plugins/supported_cards/zolotaya_korona_online.c
index 3dbd509bb..1c43f5776 100644
--- a/applications/main/nfc/plugins/supported_cards/zolotaya_korona_online.c
+++ b/applications/main/nfc/plugins/supported_cards/zolotaya_korona_online.c
@@ -23,7 +23,6 @@
 #include "protocols/mf_classic/mf_classic.h"
 
 #include <bit_lib.h>
-#include <furi_hal_rtc.h>
 
 #define TAG "Zolotaya Korona Online"
 
diff --git a/applications/main/subghz/scenes/subghz_scene_save_name.c b/applications/main/subghz/scenes/subghz_scene_save_name.c
index c0768de4b..0b2a25959 100644
--- a/applications/main/subghz/scenes/subghz_scene_save_name.c
+++ b/applications/main/subghz/scenes/subghz_scene_save_name.c
@@ -23,7 +23,7 @@ void subghz_scene_save_name_on_enter(void* context) {
     FuriString* dir_name = furi_string_alloc();
 
     char file_name_buf[SUBGHZ_MAX_LEN_NAME] = {0};
-    FuriHalRtcDateTime* datetime = subghz->save_datetime_set ? &subghz->save_datetime : NULL;
+    DateTime* datetime = subghz->save_datetime_set ? &subghz->save_datetime : NULL;
     subghz->save_datetime_set = false;
     if(!subghz_path_is_file(subghz->file_path)) {
         SubGhzProtocolDecoderBase* decoder_result = subghz_txrx_get_decoder(subghz->txrx);
diff --git a/applications/main/subghz/subghz_history.c b/applications/main/subghz/subghz_history.c
index 2f0371985..0bc0d633d 100644
--- a/applications/main/subghz/subghz_history.c
+++ b/applications/main/subghz/subghz_history.c
@@ -12,7 +12,7 @@ typedef struct {
     FlipperFormat* flipper_string;
     uint8_t type;
     SubGhzRadioPreset* preset;
-    FuriHalRtcDateTime datetime;
+    DateTime datetime;
 } SubGhzHistoryItem;
 
 ARRAY_DEF(SubGhzHistoryItemArray, SubGhzHistoryItem, M_POD_OPLIST)
@@ -131,13 +131,13 @@ const char* subghz_history_get_protocol_name(SubGhzHistory* instance, uint16_t i
     return furi_string_get_cstr(instance->tmp_string);
 }
 
-FuriHalRtcDateTime subghz_history_get_datetime(SubGhzHistory* instance, uint16_t idx) {
+DateTime subghz_history_get_datetime(SubGhzHistory* instance, uint16_t idx) {
     furi_assert(instance);
     SubGhzHistoryItem* item = SubGhzHistoryItemArray_get(instance->history->data, idx);
     if(item) {
         return item->datetime;
     } else {
-        return (FuriHalRtcDateTime){};
+        return (DateTime){};
     }
 }
 
@@ -175,7 +175,7 @@ void subghz_history_get_text_item_menu(SubGhzHistory* instance, FuriString* outp
 
 void subghz_history_get_time_item_menu(SubGhzHistory* instance, FuriString* output, uint16_t idx) {
     SubGhzHistoryItem* item = SubGhzHistoryItemArray_get(instance->history->data, idx);
-    FuriHalRtcDateTime* t = &item->datetime;
+    DateTime* t = &item->datetime;
     furi_string_printf(output, "%.2d:%.2d:%.2d ", t->hour, t->minute, t->second);
 }
 
diff --git a/applications/main/subghz/subghz_history.h b/applications/main/subghz/subghz_history.h
index 2e940a8d8..a0f95a0dd 100644
--- a/applications/main/subghz/subghz_history.h
+++ b/applications/main/subghz/subghz_history.h
@@ -74,9 +74,9 @@ const char* subghz_history_get_protocol_name(SubGhzHistory* instance, uint16_t i
  * 
  * @param instance  - SubGhzHistory instance
  * @param idx       - record index  
- * @return datetime - FuriHalRtcDateTime received timestamp  
+ * @return datetime - DateTime received timestamp  
  */
-FuriHalRtcDateTime subghz_history_get_datetime(SubGhzHistory* instance, uint16_t idx);
+DateTime subghz_history_get_datetime(SubGhzHistory* instance, uint16_t idx);
 
 /** Get string item menu to history[idx]
  * 
diff --git a/applications/main/subghz/subghz_i.h b/applications/main/subghz/subghz_i.h
index 09caed7a9..d89dcceae 100644
--- a/applications/main/subghz/subghz_i.h
+++ b/applications/main/subghz/subghz_i.h
@@ -80,7 +80,7 @@ struct SubGhz {
     bool raw_send_only;
 
     bool save_datetime_set;
-    FuriHalRtcDateTime save_datetime;
+    DateTime save_datetime;
 
     SubGhzLastSettings* last_settings;
 
diff --git a/applications/services/cli/cli_commands.c b/applications/services/cli/cli_commands.c
index 4f93e08e6..4874e6b46 100644
--- a/applications/services/cli/cli_commands.c
+++ b/applications/services/cli/cli_commands.c
@@ -101,7 +101,7 @@ void cli_command_date(Cli* cli, FuriString* args, void* context) {
     UNUSED(cli);
     UNUSED(context);
 
-    FuriHalRtcDateTime datetime = {0};
+    DateTime datetime = {0};
 
     if(furi_string_size(args) > 0) {
         uint16_t hours, minutes, seconds, month, day, year, weekday;
@@ -135,7 +135,7 @@ void cli_command_date(Cli* cli, FuriString* args, void* context) {
             return;
         }
 
-        if(!furi_hal_rtc_validate_datetime(&datetime)) {
+        if(!datetime_validate_datetime(&datetime)) {
             printf("Invalid datetime data");
             return;
         }
diff --git a/applications/services/desktop/desktop.c b/applications/services/desktop/desktop.c
index 4244ded57..9d26d473e 100644
--- a/applications/services/desktop/desktop.c
+++ b/applications/services/desktop/desktop.c
@@ -53,7 +53,7 @@ static void desktop_dummy_mode_icon_draw_callback(Canvas* canvas, void* context)
 static void desktop_clock_update(Desktop* desktop) {
     furi_assert(desktop);
 
-    FuriHalRtcDateTime curr_dt;
+    DateTime curr_dt;
     furi_hal_rtc_get_datetime(&curr_dt);
     bool time_format_12 = locale_get_time_format() == LocaleTimeFormat12h;
 
diff --git a/applications/services/dolphin/dolphin.c b/applications/services/dolphin/dolphin.c
index 520a01978..e81101ba5 100644
--- a/applications/services/dolphin/dolphin.c
+++ b/applications/services/dolphin/dolphin.c
@@ -128,7 +128,7 @@ static void dolphin_update_clear_limits_timer_period(Dolphin* dolphin) {
     uint32_t timer_expires_at = furi_timer_get_expire_time(dolphin->clear_limits_timer);
 
     if((timer_expires_at - now_ticks) > HOURS_IN_TICKS(0.1)) {
-        FuriHalRtcDateTime date;
+        DateTime date;
         furi_hal_rtc_get_datetime(&date);
         uint32_t now_time_in_ms = ((date.hour * 60 + date.minute) * 60 + date.second) * 1000;
         uint32_t time_to_clear_limits = 0;
diff --git a/applications/services/dolphin/helpers/dolphin_state.c b/applications/services/dolphin/helpers/dolphin_state.c
index 14f080464..842d6b715 100644
--- a/applications/services/dolphin/helpers/dolphin_state.c
+++ b/applications/services/dolphin/helpers/dolphin_state.c
@@ -74,9 +74,9 @@ bool dolphin_state_load(DolphinState* dolphin_state) {
 }
 
 uint64_t dolphin_state_timestamp() {
-    FuriHalRtcDateTime datetime;
+    DateTime datetime;
     furi_hal_rtc_get_datetime(&datetime);
-    return furi_hal_rtc_datetime_to_timestamp(&datetime);
+    return datetime_datetime_to_timestamp(&datetime);
 }
 
 bool dolphin_state_is_levelup(uint32_t icounter) {
diff --git a/applications/services/locale/locale.c b/applications/services/locale/locale.c
index e8b6a9fc5..4f7eb90ec 100644
--- a/applications/services/locale/locale.c
+++ b/applications/services/locale/locale.c
@@ -36,7 +36,7 @@ float locale_celsius_to_fahrenheit(float temp_c) {
 
 void locale_format_time(
     FuriString* out_str,
-    const FuriHalRtcDateTime* datetime,
+    const DateTime* datetime,
     const LocaleTimeFormat format,
     const bool show_seconds) {
     furi_assert(out_str);
@@ -69,7 +69,7 @@ void locale_format_time(
 
 void locale_format_date(
     FuriString* out_str,
-    const FuriHalRtcDateTime* datetime,
+    const DateTime* datetime,
     const LocaleDateFormat format,
     const char* separator) {
     furi_assert(out_str);
diff --git a/applications/services/locale/locale.h b/applications/services/locale/locale.h
index 61fb4c605..c4f8e78e5 100644
--- a/applications/services/locale/locale.h
+++ b/applications/services/locale/locale.h
@@ -73,7 +73,7 @@ void locale_set_time_format(LocaleTimeFormat format);
  */
 void locale_format_time(
     FuriString* out_str,
-    const FuriHalRtcDateTime* datetime,
+    const DateTime* datetime,
     const LocaleTimeFormat format,
     const bool show_seconds);
 
@@ -98,7 +98,7 @@ void locale_set_date_format(LocaleDateFormat format);
  */
 void locale_format_date(
     FuriString* out_str,
-    const FuriHalRtcDateTime* datetime,
+    const DateTime* datetime,
     const LocaleDateFormat format,
     const char* separator);
 
diff --git a/applications/services/rpc/rpc_system.c b/applications/services/rpc/rpc_system.c
index 96a189ad3..0b9fd33f9 100644
--- a/applications/services/rpc/rpc_system.c
+++ b/applications/services/rpc/rpc_system.c
@@ -122,7 +122,7 @@ static void rpc_system_system_get_datetime_process(const PB_Main* request, void*
     RpcSession* session = (RpcSession*)context;
     furi_assert(session);
 
-    FuriHalRtcDateTime datetime;
+    DateTime datetime;
     furi_hal_rtc_get_datetime(&datetime);
 
     PB_Main* response = malloc(sizeof(PB_Main));
@@ -157,7 +157,7 @@ static void rpc_system_system_set_datetime_process(const PB_Main* request, void*
         return;
     }
 
-    FuriHalRtcDateTime datetime;
+    DateTime datetime;
     datetime.hour = request->content.system_set_datetime_request.datetime.hour;
     datetime.minute = request->content.system_set_datetime_request.datetime.minute;
     datetime.second = request->content.system_set_datetime_request.datetime.second;
diff --git a/lib/SConscript b/lib/SConscript
index 7bd00e4e4..cf96a1b84 100644
--- a/lib/SConscript
+++ b/lib/SConscript
@@ -43,6 +43,7 @@ libs = env.BuildModules(
         "update_util",
         "heatshrink",
         "bit_lib",
+        "datetime",
     ],
 )
 
diff --git a/lib/datetime/SConscript b/lib/datetime/SConscript
new file mode 100644
index 000000000..99fc0ec5d
--- /dev/null
+++ b/lib/datetime/SConscript
@@ -0,0 +1,22 @@
+Import("env")
+
+env.Append(
+    LINT_SOURCES=[
+        Dir("."),
+    ],
+    CPPPATH=[
+        "#/lib/datetime",
+    ],
+    SDK_HEADERS=[
+        File("datetime.h"),
+    ],
+)
+
+libenv = env.Clone(FW_LIB_NAME="datetime")
+libenv.ApplyLibFlags()
+
+sources = libenv.GlobRecursive("*.c*")
+
+lib = libenv.StaticLibrary("${FW_LIB_NAME}", sources)
+libenv.Install("${LIB_DIST_DIR}", lib)
+Return("lib")
diff --git a/lib/datetime/datetime.c b/lib/datetime/datetime.c
new file mode 100644
index 000000000..7b1f73dd0
--- /dev/null
+++ b/lib/datetime/datetime.c
@@ -0,0 +1,104 @@
+#include "datetime.h"
+
+#define TAG "DateTime"
+
+#define SECONDS_PER_MINUTE 60
+#define SECONDS_PER_HOUR (SECONDS_PER_MINUTE * 60)
+#define SECONDS_PER_DAY (SECONDS_PER_HOUR * 24)
+#define MONTHS_COUNT 12
+#define EPOCH_START_YEAR 1970
+
+static const uint8_t datetime_days_per_month[2][MONTHS_COUNT] = {
+    {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
+    {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}};
+
+static const uint16_t datetime_days_per_year[] = {365, 366};
+
+bool datetime_validate_datetime(DateTime* datetime) {
+    bool invalid = false;
+
+    invalid |= (datetime->second > 59);
+    invalid |= (datetime->minute > 59);
+    invalid |= (datetime->hour > 23);
+
+    invalid |= (datetime->year < 2000);
+    invalid |= (datetime->year > 2099);
+
+    invalid |= (datetime->month == 0);
+    invalid |= (datetime->month > 12);
+
+    invalid |= (datetime->day == 0);
+    invalid |= (datetime->day > 31);
+
+    invalid |= (datetime->weekday == 0);
+    invalid |= (datetime->weekday > 7);
+
+    return !invalid;
+}
+
+uint32_t datetime_datetime_to_timestamp(DateTime* datetime) {
+    uint32_t timestamp = 0;
+    uint8_t years = 0;
+    uint8_t leap_years = 0;
+
+    for(uint16_t y = EPOCH_START_YEAR; y < datetime->year; y++) {
+        if(datetime_is_leap_year(y)) {
+            leap_years++;
+        } else {
+            years++;
+        }
+    }
+
+    timestamp += ((years * datetime_days_per_year[0]) + (leap_years * datetime_days_per_year[1])) *
+                 SECONDS_PER_DAY;
+
+    bool leap_year = datetime_is_leap_year(datetime->year);
+
+    for(uint8_t m = 1; m < datetime->month; m++) {
+        timestamp += datetime_get_days_per_month(leap_year, m) * SECONDS_PER_DAY;
+    }
+
+    timestamp += (datetime->day - 1) * SECONDS_PER_DAY;
+    timestamp += datetime->hour * SECONDS_PER_HOUR;
+    timestamp += datetime->minute * SECONDS_PER_MINUTE;
+    timestamp += datetime->second;
+
+    return timestamp;
+}
+
+void datetime_timestamp_to_datetime(uint32_t timestamp, DateTime* datetime) {
+    uint32_t days = timestamp / SECONDS_PER_DAY;
+    uint32_t seconds_in_day = timestamp % SECONDS_PER_DAY;
+
+    datetime->year = EPOCH_START_YEAR;
+
+    while(days >= datetime_get_days_per_year(datetime->year)) {
+        days -= datetime_get_days_per_year(datetime->year);
+        (datetime->year)++;
+    }
+
+    datetime->month = 1;
+    while(days >=
+          datetime_get_days_per_month(datetime_is_leap_year(datetime->year), datetime->month)) {
+        days -=
+            datetime_get_days_per_month(datetime_is_leap_year(datetime->year), datetime->month);
+        (datetime->month)++;
+    }
+
+    datetime->day = days + 1;
+    datetime->hour = seconds_in_day / SECONDS_PER_HOUR;
+    datetime->minute = (seconds_in_day % SECONDS_PER_HOUR) / SECONDS_PER_MINUTE;
+    datetime->second = seconds_in_day % SECONDS_PER_MINUTE;
+}
+
+uint16_t datetime_get_days_per_year(uint16_t year) {
+    return datetime_days_per_year[datetime_is_leap_year(year) ? 1 : 0];
+}
+
+bool datetime_is_leap_year(uint16_t year) {
+    return (((year) % 4 == 0) && ((year) % 100 != 0)) || ((year) % 400 == 0);
+}
+
+uint8_t datetime_get_days_per_month(bool leap_year, uint8_t month) {
+    return datetime_days_per_month[leap_year ? 1 : 0][month - 1];
+}
diff --git a/lib/datetime/datetime.h b/lib/datetime/datetime.h
new file mode 100644
index 000000000..1dabf7240
--- /dev/null
+++ b/lib/datetime/datetime.h
@@ -0,0 +1,75 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    // Time
+    uint8_t hour; /**< Hour in 24H format: 0-23 */
+    uint8_t minute; /**< Minute: 0-59 */
+    uint8_t second; /**< Second: 0-59 */
+    // Date
+    uint8_t day; /**< Current day: 1-31 */
+    uint8_t month; /**< Current month: 1-12 */
+    uint16_t year; /**< Current year: 2000-2099 */
+    uint8_t weekday; /**< Current weekday: 1-7 */
+} DateTime;
+
+/** Validate Date Time
+ *
+ * @param      datetime  The datetime to validate
+ *
+ * @return     { description_of_the_return_value }
+ */
+bool datetime_validate_datetime(DateTime* datetime);
+
+/** Convert DateTime to UNIX timestamp
+ * 
+ * @warning    Mind timezone when perform conversion
+ *
+ * @param      datetime  The datetime (UTC)
+ *
+ * @return     UNIX Timestamp in seconds from UNIX epoch start
+ */
+uint32_t datetime_datetime_to_timestamp(DateTime* datetime);
+
+/** Convert UNIX timestamp to DateTime
+ *
+ * @warning    Mind timezone when perform conversion
+ *
+ * @param[in]  timestamp  UNIX Timestamp in seconds from UNIX epoch start
+ * @param[out] datetime   The datetime (UTC)
+ */
+void datetime_timestamp_to_datetime(uint32_t timestamp, DateTime* datetime);
+
+/** Gets the number of days in the year according to the Gregorian calendar.
+ *
+ * @param year Input year.
+ *
+ * @return number of days in `year`.
+ */
+uint16_t datetime_get_days_per_year(uint16_t year);
+
+/** Check if a year a leap year in the Gregorian calendar.
+ *
+ * @param year Input year.
+ *
+ * @return true if `year` is a leap year.
+ */
+bool datetime_is_leap_year(uint16_t year);
+
+/** Get the number of days in the month.
+ *
+ * @param leap_year true to calculate based on leap years
+ * @param month month to check, where 1 = January
+ * @return the number of days in the month
+ */
+uint8_t datetime_get_days_per_month(bool leap_year, uint8_t month);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/lib/lfrfid/protocols/lfrfid_protocols.c b/lib/lfrfid/protocols/lfrfid_protocols.c
index a15b25ed4..10998399a 100644
--- a/lib/lfrfid/protocols/lfrfid_protocols.c
+++ b/lib/lfrfid/protocols/lfrfid_protocols.c
@@ -21,6 +21,7 @@
 const ProtocolBase* lfrfid_protocols[] = {
     [LFRFIDProtocolEM4100] = &protocol_em4100,
     [LFRFIDProtocolEM4100_32] = &protocol_em4100_32,
+    [LFRFIDProtocolEM4100_16] = &protocol_em4100_16,
     [LFRFIDProtocolH10301] = &protocol_h10301,
     [LFRFIDProtocolIdteck] = &protocol_idteck,
     [LFRFIDProtocolIndala26] = &protocol_indala26,
diff --git a/lib/lfrfid/protocols/lfrfid_protocols.h b/lib/lfrfid/protocols/lfrfid_protocols.h
index ce14ca1c9..2c7ed828d 100644
--- a/lib/lfrfid/protocols/lfrfid_protocols.h
+++ b/lib/lfrfid/protocols/lfrfid_protocols.h
@@ -10,6 +10,7 @@ typedef enum {
 typedef enum {
     LFRFIDProtocolEM4100,
     LFRFIDProtocolEM4100_32,
+    LFRFIDProtocolEM4100_16,
     LFRFIDProtocolH10301,
     LFRFIDProtocolIdteck,
     LFRFIDProtocolIndala26,
diff --git a/lib/lfrfid/protocols/protocol_em4100.c b/lib/lfrfid/protocols/protocol_em4100.c
index 38d6bcb82..05952110d 100644
--- a/lib/lfrfid/protocols/protocol_em4100.c
+++ b/lib/lfrfid/protocols/protocol_em4100.c
@@ -45,6 +45,8 @@ uint16_t protocol_em4100_get_time_divisor(ProtocolEM4100* proto) {
         return 1;
     case 32:
         return 2;
+    case 16:
+        return 4;
     default:
         return 1;
     }
@@ -56,6 +58,8 @@ uint32_t protocol_em4100_get_t5577_bitrate(ProtocolEM4100* proto) {
         return LFRFID_T5577_BITRATE_RF_64;
     case 32:
         return LFRFID_T5577_BITRATE_RF_32;
+    case 16:
+        return LFRFID_T5577_BITRATE_RF_16;
     default:
         return LFRFID_T5577_BITRATE_RF_64;
     }
@@ -87,6 +91,12 @@ ProtocolEM4100* protocol_em4100_alloc(void) {
     return (void*)proto;
 };
 
+ProtocolEM4100* protocol_em4100_16_alloc(void) {
+    ProtocolEM4100* proto = malloc(sizeof(ProtocolEM4100));
+    proto->clock_per_bit = 16;
+    return (void*)proto;
+};
+
 ProtocolEM4100* protocol_em4100_32_alloc(void) {
     ProtocolEM4100* proto = malloc(sizeof(ProtocolEM4100));
     proto->clock_per_bit = 32;
@@ -373,3 +383,27 @@ const ProtocolBase protocol_em4100_32 = {
     .render_brief_data = (ProtocolRenderData)protocol_em4100_render_data,
     .write_data = (ProtocolWriteData)protocol_em4100_write_data,
 };
+
+const ProtocolBase protocol_em4100_16 = {
+    .name = "EM4100/16",
+    .manufacturer = "EM-Micro",
+    .data_size = EM4100_DECODED_DATA_SIZE,
+    .features = LFRFIDFeatureASK | LFRFIDFeaturePSK,
+    .validate_count = 3,
+    .alloc = (ProtocolAlloc)protocol_em4100_16_alloc,
+    .free = (ProtocolFree)protocol_em4100_free,
+    .get_data = (ProtocolGetData)protocol_em4100_get_data,
+    .decoder =
+        {
+            .start = (ProtocolDecoderStart)protocol_em4100_decoder_start,
+            .feed = (ProtocolDecoderFeed)protocol_em4100_decoder_feed,
+        },
+    .encoder =
+        {
+            .start = (ProtocolEncoderStart)protocol_em4100_encoder_start,
+            .yield = (ProtocolEncoderYield)protocol_em4100_encoder_yield,
+        },
+    .render_data = (ProtocolRenderData)protocol_em4100_render_data,
+    .render_brief_data = (ProtocolRenderData)protocol_em4100_render_data,
+    .write_data = (ProtocolWriteData)protocol_em4100_write_data,
+};
diff --git a/lib/lfrfid/protocols/protocol_em4100.h b/lib/lfrfid/protocols/protocol_em4100.h
index b19a29705..23af66e27 100644
--- a/lib/lfrfid/protocols/protocol_em4100.h
+++ b/lib/lfrfid/protocols/protocol_em4100.h
@@ -4,3 +4,5 @@
 extern const ProtocolBase protocol_em4100;
 
 extern const ProtocolBase protocol_em4100_32;
+
+extern const ProtocolBase protocol_em4100_16;
diff --git a/lib/lfrfid/tools/t5577.c b/lib/lfrfid/tools/t5577.c
index 7d6d6d298..4b24b742a 100644
--- a/lib/lfrfid/tools/t5577.c
+++ b/lib/lfrfid/tools/t5577.c
@@ -139,4 +139,4 @@ void t5577_write_with_mask(LFRFIDT5577* data, uint8_t page, bool with_pass, uint
     t5577_write_reset();
     FURI_CRITICAL_EXIT();
     t5577_stop();
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/name_generator.c b/lib/toolbox/name_generator.c
index 541622b88..9748a7648 100644
--- a/lib/toolbox/name_generator.c
+++ b/lib/toolbox/name_generator.c
@@ -48,7 +48,7 @@ void name_generator_make_auto_datetime(
     char* name,
     size_t max_name_size,
     const char* prefix,
-    FuriHalRtcDateTime* custom_time) {
+    DateTime* custom_time) {
     if(furi_hal_rtc_is_flag_set(FuriHalRtcFlagDetailedFilename)) {
         name_generator_make_detailed_datetime(name, max_name_size, prefix, custom_time);
     } else {
@@ -88,12 +88,12 @@ void name_generator_make_detailed_datetime(
     char* name,
     size_t max_name_size,
     const char* prefix,
-    FuriHalRtcDateTime* custom_time) {
+    DateTime* custom_time) {
     furi_assert(name);
     furi_assert(max_name_size);
     furi_assert(prefix);
 
-    FuriHalRtcDateTime dateTime;
+    DateTime dateTime;
     if(custom_time) {
         dateTime = *custom_time;
     } else {
diff --git a/lib/toolbox/name_generator.h b/lib/toolbox/name_generator.h
index ac9cdf6f5..e6c443688 100644
--- a/lib/toolbox/name_generator.h
+++ b/lib/toolbox/name_generator.h
@@ -19,7 +19,7 @@ void name_generator_make_auto_datetime(
     char* name,
     size_t max_name_size,
     const char* prefix,
-    FuriHalRtcDateTime* custom_time);
+    DateTime* custom_time);
 
 /** Generates random name
  *
@@ -41,7 +41,7 @@ void name_generator_make_detailed_datetime(
     char* name,
     size_t max_name_size,
     const char* prefix,
-    FuriHalRtcDateTime* custom_time);
+    DateTime* custom_time);
 
 #ifdef __cplusplus
 }
diff --git a/targets/f18/api_symbols.csv b/targets/f18/api_symbols.csv
index 2a941c9d0..9a6b425d6 100644
--- a/targets/f18/api_symbols.csv
+++ b/targets/f18/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,56.0,,
+Version,+,57.0,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -38,6 +38,7 @@ Header,+,applications/services/power/power_service/power.h,,
 Header,+,applications/services/rpc/rpc_app.h,,
 Header,+,applications/services/storage/storage.h,,
 Header,+,lib/bit_lib/bit_lib.h,,
+Header,+,lib/datetime/datetime.h,,
 Header,+,lib/digital_signal/digital_sequence.h,,
 Header,+,lib/digital_signal/digital_signal.h,,
 Header,+,lib/drivers/cc1101_regs.h,,
@@ -742,6 +743,12 @@ Function,+,crc32_calc_buffer,uint32_t,"uint32_t, const void*, size_t"
 Function,+,crc32_calc_file,uint32_t,"File*, const FileCrcProgressCb, void*"
 Function,-,ctermid,char*,char*
 Function,-,cuserid,char*,char*
+Function,+,datetime_datetime_to_timestamp,uint32_t,DateTime*
+Function,+,datetime_get_days_per_month,uint8_t,"_Bool, uint8_t"
+Function,+,datetime_get_days_per_year,uint16_t,uint16_t
+Function,+,datetime_is_leap_year,_Bool,uint16_t
+Function,+,datetime_timestamp_to_datetime,void,"uint32_t, DateTime*"
+Function,+,datetime_validate_datetime,_Bool,DateTime*
 Function,+,dialog_ex_alloc,DialogEx*,
 Function,+,dialog_ex_disable_extended_events,void,DialogEx*
 Function,+,dialog_ex_enable_extended_events,void,DialogEx*
@@ -1288,12 +1295,9 @@ Function,-,furi_hal_resources_deinit_early,void,
 Function,+,furi_hal_resources_get_ext_pin_number,int32_t,const GpioPin*
 Function,-,furi_hal_resources_init,void,
 Function,-,furi_hal_resources_init_early,void,
-Function,+,furi_hal_rtc_datetime_to_timestamp,uint32_t,FuriHalRtcDateTime*
 Function,-,furi_hal_rtc_deinit_early,void,
 Function,+,furi_hal_rtc_get_boot_mode,FuriHalRtcBootMode,
-Function,+,furi_hal_rtc_get_datetime,void,FuriHalRtcDateTime*
-Function,+,furi_hal_rtc_get_days_per_month,uint8_t,"_Bool, uint8_t"
-Function,+,furi_hal_rtc_get_days_per_year,uint16_t,uint16_t
+Function,+,furi_hal_rtc_get_datetime,void,DateTime*
 Function,+,furi_hal_rtc_get_fault_data,uint32_t,
 Function,+,furi_hal_rtc_get_heap_track_mode,FuriHalRtcHeapTrackMode,
 Function,+,furi_hal_rtc_get_locale_dateformat,FuriHalRtcLocaleDateFormat,
@@ -1308,11 +1312,10 @@ Function,+,furi_hal_rtc_get_timestamp,uint32_t,
 Function,-,furi_hal_rtc_init,void,
 Function,-,furi_hal_rtc_init_early,void,
 Function,+,furi_hal_rtc_is_flag_set,_Bool,FuriHalRtcFlag
-Function,+,furi_hal_rtc_is_leap_year,_Bool,uint16_t
 Function,+,furi_hal_rtc_reset_flag,void,FuriHalRtcFlag
 Function,+,furi_hal_rtc_reset_registers,void,
 Function,+,furi_hal_rtc_set_boot_mode,void,FuriHalRtcBootMode
-Function,+,furi_hal_rtc_set_datetime,void,FuriHalRtcDateTime*
+Function,+,furi_hal_rtc_set_datetime,void,DateTime*
 Function,+,furi_hal_rtc_set_fault_data,void,uint32_t
 Function,+,furi_hal_rtc_set_flag,void,FuriHalRtcFlag
 Function,+,furi_hal_rtc_set_heap_track_mode,void,FuriHalRtcHeapTrackMode
@@ -1325,8 +1328,6 @@ Function,+,furi_hal_rtc_set_log_level,void,uint8_t
 Function,+,furi_hal_rtc_set_pin_fails,void,uint32_t
 Function,+,furi_hal_rtc_set_register,void,"FuriHalRtcRegister, uint32_t"
 Function,+,furi_hal_rtc_sync_shadow,void,
-Function,+,furi_hal_rtc_timestamp_to_datetime,void,"uint32_t, FuriHalRtcDateTime*"
-Function,+,furi_hal_rtc_validate_datetime,_Bool,FuriHalRtcDateTime*
 Function,+,furi_hal_sd_get_card_state,FuriStatus,
 Function,+,furi_hal_sd_info,FuriStatus,FuriHalSdInfo*
 Function,+,furi_hal_sd_init,FuriStatus,_Bool
@@ -1728,8 +1729,8 @@ Function,+,loading_free,void,Loading*
 Function,+,loading_get_view,View*,Loading*
 Function,+,locale_celsius_to_fahrenheit,float,float
 Function,+,locale_fahrenheit_to_celsius,float,float
-Function,+,locale_format_date,void,"FuriString*, const FuriHalRtcDateTime*, const LocaleDateFormat, const char*"
-Function,+,locale_format_time,void,"FuriString*, const FuriHalRtcDateTime*, const LocaleTimeFormat, const _Bool"
+Function,+,locale_format_date,void,"FuriString*, const DateTime*, const LocaleDateFormat, const char*"
+Function,+,locale_format_time,void,"FuriString*, const DateTime*, const LocaleTimeFormat, const _Bool"
 Function,+,locale_get_date_format,LocaleDateFormat,
 Function,+,locale_get_measurement_unit,LocaleMeasurementUnits,
 Function,+,locale_get_time_format,LocaleTimeFormat,
diff --git a/targets/f18/target.json b/targets/f18/target.json
index a8669f552..43e9254cd 100644
--- a/targets/f18/target.json
+++ b/targets/f18/target.json
@@ -37,7 +37,8 @@
         "heatshrink",
         "flipperformat",
         "flipper18",
-        "bit_lib"
+        "bit_lib",
+        "datetime"
     ],
     "excluded_sources": [
         "furi_hal_infrared.c",
@@ -67,4 +68,4 @@
         "ibutton",
         "infrared"
     ]
-}
\ No newline at end of file
+}
diff --git a/targets/f7/api_symbols.csv b/targets/f7/api_symbols.csv
index a2b2b6614..018827135 100644
--- a/targets/f7/api_symbols.csv
+++ b/targets/f7/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,56.0,,
+Version,+,57.0,,
 Header,+,applications/drivers/subghz/cc1101_ext/cc1101_ext_interconnect.h,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
@@ -39,6 +39,7 @@ Header,+,applications/services/power/power_service/power.h,,
 Header,+,applications/services/rpc/rpc_app.h,,
 Header,+,applications/services/storage/storage.h,,
 Header,+,lib/bit_lib/bit_lib.h,,
+Header,+,lib/datetime/datetime.h,,
 Header,+,lib/digital_signal/digital_sequence.h,,
 Header,+,lib/digital_signal/digital_signal.h,,
 Header,+,lib/drivers/cc1101_regs.h,,
@@ -814,6 +815,12 @@ Function,+,crc32_calc_buffer,uint32_t,"uint32_t, const void*, size_t"
 Function,+,crc32_calc_file,uint32_t,"File*, const FileCrcProgressCb, void*"
 Function,-,ctermid,char*,char*
 Function,-,cuserid,char*,char*
+Function,+,datetime_datetime_to_timestamp,uint32_t,DateTime*
+Function,+,datetime_get_days_per_month,uint8_t,"_Bool, uint8_t"
+Function,+,datetime_get_days_per_year,uint16_t,uint16_t
+Function,+,datetime_is_leap_year,_Bool,uint16_t
+Function,+,datetime_timestamp_to_datetime,void,"uint32_t, DateTime*"
+Function,+,datetime_validate_datetime,_Bool,DateTime*
 Function,+,dialog_ex_alloc,DialogEx*,
 Function,+,dialog_ex_disable_extended_events,void,DialogEx*
 Function,+,dialog_ex_enable_extended_events,void,DialogEx*
@@ -1459,12 +1466,9 @@ Function,+,furi_hal_rfid_tim_read_continue,void,
 Function,+,furi_hal_rfid_tim_read_pause,void,
 Function,+,furi_hal_rfid_tim_read_start,void,"float, float"
 Function,+,furi_hal_rfid_tim_read_stop,void,
-Function,+,furi_hal_rtc_datetime_to_timestamp,uint32_t,FuriHalRtcDateTime*
 Function,-,furi_hal_rtc_deinit_early,void,
 Function,+,furi_hal_rtc_get_boot_mode,FuriHalRtcBootMode,
-Function,+,furi_hal_rtc_get_datetime,void,FuriHalRtcDateTime*
-Function,+,furi_hal_rtc_get_days_per_month,uint8_t,"_Bool, uint8_t"
-Function,+,furi_hal_rtc_get_days_per_year,uint16_t,uint16_t
+Function,+,furi_hal_rtc_get_datetime,void,DateTime*
 Function,+,furi_hal_rtc_get_fault_data,uint32_t,
 Function,+,furi_hal_rtc_get_heap_track_mode,FuriHalRtcHeapTrackMode,
 Function,+,furi_hal_rtc_get_locale_dateformat,FuriHalRtcLocaleDateFormat,
@@ -1479,11 +1483,10 @@ Function,+,furi_hal_rtc_get_timestamp,uint32_t,
 Function,-,furi_hal_rtc_init,void,
 Function,-,furi_hal_rtc_init_early,void,
 Function,+,furi_hal_rtc_is_flag_set,_Bool,FuriHalRtcFlag
-Function,+,furi_hal_rtc_is_leap_year,_Bool,uint16_t
 Function,+,furi_hal_rtc_reset_flag,void,FuriHalRtcFlag
 Function,+,furi_hal_rtc_reset_registers,void,
 Function,+,furi_hal_rtc_set_boot_mode,void,FuriHalRtcBootMode
-Function,+,furi_hal_rtc_set_datetime,void,FuriHalRtcDateTime*
+Function,+,furi_hal_rtc_set_datetime,void,DateTime*
 Function,+,furi_hal_rtc_set_fault_data,void,uint32_t
 Function,+,furi_hal_rtc_set_flag,void,FuriHalRtcFlag
 Function,+,furi_hal_rtc_set_heap_track_mode,void,FuriHalRtcHeapTrackMode
@@ -1496,8 +1499,6 @@ Function,+,furi_hal_rtc_set_log_level,void,uint8_t
 Function,+,furi_hal_rtc_set_pin_fails,void,uint32_t
 Function,+,furi_hal_rtc_set_register,void,"FuriHalRtcRegister, uint32_t"
 Function,+,furi_hal_rtc_sync_shadow,void,
-Function,+,furi_hal_rtc_timestamp_to_datetime,void,"uint32_t, FuriHalRtcDateTime*"
-Function,+,furi_hal_rtc_validate_datetime,_Bool,FuriHalRtcDateTime*
 Function,+,furi_hal_sd_get_card_state,FuriStatus,
 Function,+,furi_hal_sd_info,FuriStatus,FuriHalSdInfo*
 Function,+,furi_hal_sd_init,FuriStatus,_Bool
@@ -2139,8 +2140,8 @@ Function,+,loading_free,void,Loading*
 Function,+,loading_get_view,View*,Loading*
 Function,+,locale_celsius_to_fahrenheit,float,float
 Function,+,locale_fahrenheit_to_celsius,float,float
-Function,+,locale_format_date,void,"FuriString*, const FuriHalRtcDateTime*, const LocaleDateFormat, const char*"
-Function,+,locale_format_time,void,"FuriString*, const FuriHalRtcDateTime*, const LocaleTimeFormat, const _Bool"
+Function,+,locale_format_date,void,"FuriString*, const DateTime*, const LocaleDateFormat, const char*"
+Function,+,locale_format_time,void,"FuriString*, const DateTime*, const LocaleTimeFormat, const _Bool"
 Function,+,locale_get_date_format,LocaleDateFormat,
 Function,+,locale_get_measurement_unit,LocaleMeasurementUnits,
 Function,+,locale_get_time_format,LocaleTimeFormat,
@@ -2603,9 +2604,9 @@ Function,-,music_worker_set_volume,void,"MusicWorker*, float"
 Function,-,music_worker_start,void,MusicWorker*
 Function,-,music_worker_stop,void,MusicWorker*
 Function,+,name_generator_make_auto,void,"char*, size_t, const char*"
-Function,+,name_generator_make_auto_datetime,void,"char*, size_t, const char*, FuriHalRtcDateTime*"
+Function,+,name_generator_make_auto_datetime,void,"char*, size_t, const char*, DateTime*"
 Function,+,name_generator_make_detailed,void,"char*, size_t, const char*"
-Function,+,name_generator_make_detailed_datetime,void,"char*, size_t, const char*, FuriHalRtcDateTime*"
+Function,+,name_generator_make_detailed_datetime,void,"char*, size_t, const char*, DateTime*"
 Function,+,name_generator_make_random,void,"char*, size_t"
 Function,+,name_generator_make_random_prefixed,void,"char*, size_t, const char*"
 Function,-,nan,double,const char*
diff --git a/targets/f7/fatfs/fatfs.c b/targets/f7/fatfs/fatfs.c
index 5a8912cbd..0e17f75c1 100644
--- a/targets/f7/fatfs/fatfs.c
+++ b/targets/f7/fatfs/fatfs.c
@@ -15,7 +15,7 @@ void fatfs_init(void) {
   * @return     Time in DWORD (toasters per square washing machine)
   */
 DWORD get_fattime() {
-    FuriHalRtcDateTime furi_time;
+    DateTime furi_time;
     furi_hal_rtc_get_datetime(&furi_time);
 
     return ((uint32_t)(furi_time.year - 1980) << 25) | furi_time.month << 21 |
diff --git a/targets/f7/furi_hal/furi_hal_rtc.c b/targets/f7/furi_hal/furi_hal_rtc.c
index 88aad6858..cd4fa8b9b 100644
--- a/targets/f7/furi_hal/furi_hal_rtc.c
+++ b/targets/f7/furi_hal/furi_hal_rtc.c
@@ -42,18 +42,6 @@ typedef struct {
 
 _Static_assert(sizeof(SystemReg) == 4, "SystemReg size mismatch");
 
-#define FURI_HAL_RTC_SECONDS_PER_MINUTE 60
-#define FURI_HAL_RTC_SECONDS_PER_HOUR (FURI_HAL_RTC_SECONDS_PER_MINUTE * 60)
-#define FURI_HAL_RTC_SECONDS_PER_DAY (FURI_HAL_RTC_SECONDS_PER_HOUR * 24)
-#define FURI_HAL_RTC_MONTHS_COUNT 12
-#define FURI_HAL_RTC_EPOCH_START_YEAR 1970
-
-static const uint8_t furi_hal_rtc_days_per_month[2][FURI_HAL_RTC_MONTHS_COUNT] = {
-    {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
-    {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}};
-
-static const uint16_t furi_hal_rtc_days_per_year[] = {365, 366};
-
 static const FuriHalSerialId furi_hal_rtc_log_devices[] = {
     [FuriHalRtcLogDeviceUsart] = FuriHalSerialIdUsart,
     [FuriHalRtcLogDeviceLpuart] = FuriHalSerialIdLpuart,
@@ -103,7 +91,7 @@ static bool furi_hal_rtc_start_clock_and_switch() {
 }
 
 static void furi_hal_rtc_recover() {
-    FuriHalRtcDateTime datetime = {0};
+    DateTime datetime = {0};
 
     // Handle fixable LSE failure
     if(LL_RCC_LSE_IsCSSDetected()) {
@@ -350,7 +338,7 @@ FuriHalRtcLocaleDateFormat furi_hal_rtc_get_locale_dateformat() {
     return data->locale_dateformat;
 }
 
-void furi_hal_rtc_set_datetime(FuriHalRtcDateTime* datetime) {
+void furi_hal_rtc_set_datetime(DateTime* datetime) {
     furi_check(!FURI_IS_IRQ_MODE());
     furi_assert(datetime);
 
@@ -389,7 +377,7 @@ void furi_hal_rtc_set_datetime(FuriHalRtcDateTime* datetime) {
     FURI_CRITICAL_EXIT();
 }
 
-void furi_hal_rtc_get_datetime(FuriHalRtcDateTime* datetime) {
+void furi_hal_rtc_get_datetime(DateTime* datetime) {
     furi_check(!FURI_IS_IRQ_MODE());
     furi_assert(datetime);
 
@@ -407,28 +395,6 @@ void furi_hal_rtc_get_datetime(FuriHalRtcDateTime* datetime) {
     datetime->weekday = __LL_RTC_CONVERT_BCD2BIN((date >> 24) & 0xFF);
 }
 
-bool furi_hal_rtc_validate_datetime(FuriHalRtcDateTime* datetime) {
-    bool invalid = false;
-
-    invalid |= (datetime->second > 59);
-    invalid |= (datetime->minute > 59);
-    invalid |= (datetime->hour > 23);
-
-    invalid |= (datetime->year < 2000);
-    invalid |= (datetime->year > 2099);
-
-    invalid |= (datetime->month == 0);
-    invalid |= (datetime->month > 12);
-
-    invalid |= (datetime->day == 0);
-    invalid |= (datetime->day > 31);
-
-    invalid |= (datetime->weekday == 0);
-    invalid |= (datetime->weekday > 7);
-
-    return !invalid;
-}
-
 void furi_hal_rtc_set_fault_data(uint32_t value) {
     furi_hal_rtc_set_register(FuriHalRtcRegisterFaultData, value);
 }
@@ -446,76 +412,7 @@ uint32_t furi_hal_rtc_get_pin_fails() {
 }
 
 uint32_t furi_hal_rtc_get_timestamp() {
-    FuriHalRtcDateTime datetime = {0};
+    DateTime datetime = {0};
     furi_hal_rtc_get_datetime(&datetime);
-    return furi_hal_rtc_datetime_to_timestamp(&datetime);
-}
-
-uint32_t furi_hal_rtc_datetime_to_timestamp(FuriHalRtcDateTime* datetime) {
-    uint32_t timestamp = 0;
-    uint8_t years = 0;
-    uint8_t leap_years = 0;
-
-    for(uint16_t y = FURI_HAL_RTC_EPOCH_START_YEAR; y < datetime->year; y++) {
-        if(furi_hal_rtc_is_leap_year(y)) {
-            leap_years++;
-        } else {
-            years++;
-        }
-    }
-
-    timestamp +=
-        ((years * furi_hal_rtc_days_per_year[0]) + (leap_years * furi_hal_rtc_days_per_year[1])) *
-        FURI_HAL_RTC_SECONDS_PER_DAY;
-
-    bool leap_year = furi_hal_rtc_is_leap_year(datetime->year);
-
-    for(uint8_t m = 1; m < datetime->month; m++) {
-        timestamp += furi_hal_rtc_get_days_per_month(leap_year, m) * FURI_HAL_RTC_SECONDS_PER_DAY;
-    }
-
-    timestamp += (datetime->day - 1) * FURI_HAL_RTC_SECONDS_PER_DAY;
-    timestamp += datetime->hour * FURI_HAL_RTC_SECONDS_PER_HOUR;
-    timestamp += datetime->minute * FURI_HAL_RTC_SECONDS_PER_MINUTE;
-    timestamp += datetime->second;
-
-    return timestamp;
-}
-
-void furi_hal_rtc_timestamp_to_datetime(uint32_t timestamp, FuriHalRtcDateTime* datetime) {
-    uint32_t days = timestamp / FURI_HAL_RTC_SECONDS_PER_DAY;
-    uint32_t seconds_in_day = timestamp % FURI_HAL_RTC_SECONDS_PER_DAY;
-
-    datetime->year = FURI_HAL_RTC_EPOCH_START_YEAR;
-
-    while(days >= furi_hal_rtc_get_days_per_year(datetime->year)) {
-        days -= furi_hal_rtc_get_days_per_year(datetime->year);
-        (datetime->year)++;
-    }
-
-    datetime->month = 1;
-    while(days >= furi_hal_rtc_get_days_per_month(
-                      furi_hal_rtc_is_leap_year(datetime->year), datetime->month)) {
-        days -= furi_hal_rtc_get_days_per_month(
-            furi_hal_rtc_is_leap_year(datetime->year), datetime->month);
-        (datetime->month)++;
-    }
-
-    datetime->day = days + 1;
-    datetime->hour = seconds_in_day / FURI_HAL_RTC_SECONDS_PER_HOUR;
-    datetime->minute =
-        (seconds_in_day % FURI_HAL_RTC_SECONDS_PER_HOUR) / FURI_HAL_RTC_SECONDS_PER_MINUTE;
-    datetime->second = seconds_in_day % FURI_HAL_RTC_SECONDS_PER_MINUTE;
-}
-
-uint16_t furi_hal_rtc_get_days_per_year(uint16_t year) {
-    return furi_hal_rtc_days_per_year[furi_hal_rtc_is_leap_year(year) ? 1 : 0];
-}
-
-bool furi_hal_rtc_is_leap_year(uint16_t year) {
-    return (((year) % 4 == 0) && ((year) % 100 != 0)) || ((year) % 400 == 0);
-}
-
-uint8_t furi_hal_rtc_get_days_per_month(bool leap_year, uint8_t month) {
-    return furi_hal_rtc_days_per_month[leap_year ? 1 : 0][month - 1];
+    return datetime_datetime_to_timestamp(&datetime);
 }
diff --git a/targets/f7/furi_hal/furi_hal_rtc.h b/targets/f7/furi_hal/furi_hal_rtc.h
index 0a5023131..c871d5060 100644
--- a/targets/f7/furi_hal/furi_hal_rtc.h
+++ b/targets/f7/furi_hal/furi_hal_rtc.h
@@ -8,22 +8,12 @@
 #include <stdint.h>
 #include <stdbool.h>
 
+#include <datetime/datetime.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-typedef struct {
-    // Time
-    uint8_t hour; /**< Hour in 24H format: 0-23 */
-    uint8_t minute; /**< Minute: 0-59 */
-    uint8_t second; /**< Second: 0-59 */
-    // Date
-    uint8_t day; /**< Current day: 1-31 */
-    uint8_t month; /**< Current month: 1-12 */
-    uint16_t year; /**< Current year: 2000-2099 */
-    uint8_t weekday; /**< Current weekday: 1-7 */
-} FuriHalRtcDateTime;
-
 typedef enum {
     FuriHalRtcFlagDebug = (1 << 0),
     FuriHalRtcFlagStorageFormatInternal = (1 << 1),
@@ -247,21 +237,13 @@ FuriHalRtcLocaleDateFormat furi_hal_rtc_get_locale_dateformat(void);
  *
  * @param      datetime  The date time to set
  */
-void furi_hal_rtc_set_datetime(FuriHalRtcDateTime* datetime);
+void furi_hal_rtc_set_datetime(DateTime* datetime);
 
 /** Get RTC Date Time
  *
  * @param      datetime  The datetime
  */
-void furi_hal_rtc_get_datetime(FuriHalRtcDateTime* datetime);
-
-/** Validate Date Time
- *
- * @param      datetime  The datetime to validate
- *
- * @return     { description_of_the_return_value }
- */
-bool furi_hal_rtc_validate_datetime(FuriHalRtcDateTime* datetime);
+void furi_hal_rtc_get_datetime(DateTime* datetime);
 
 /** Set RTC Fault Data
  *
@@ -293,49 +275,6 @@ uint32_t furi_hal_rtc_get_pin_fails(void);
  */
 uint32_t furi_hal_rtc_get_timestamp(void);
 
-/** Convert DateTime to UNIX timestamp
- * 
- * @warning    Mind timezone when perform conversion
- *
- * @param      datetime  The datetime (UTC)
- *
- * @return     UNIX Timestamp in seconds from UNIX epoch start
- */
-uint32_t furi_hal_rtc_datetime_to_timestamp(FuriHalRtcDateTime* datetime);
-
-/** Convert UNIX timestamp to DateTime
- *
- * @warning    Mind timezone when perform conversion
- *
- * @param[in]  timestamp  UNIX Timestamp in seconds from UNIX epoch start
- * @param[out] datetime   The datetime (UTC)
- */
-void furi_hal_rtc_timestamp_to_datetime(uint32_t timestamp, FuriHalRtcDateTime* datetime);
-
-/** Gets the number of days in the year according to the Gregorian calendar.
- *
- * @param year Input year.
- *
- * @return number of days in `year`.
- */
-uint16_t furi_hal_rtc_get_days_per_year(uint16_t year);
-
-/** Check if a year a leap year in the Gregorian calendar.
- *
- * @param year Input year.
- *
- * @return true if `year` is a leap year.
- */
-bool furi_hal_rtc_is_leap_year(uint16_t year);
-
-/** Get the number of days in the month.
- *
- * @param leap_year true to calculate based on leap years
- * @param month month to check, where 1 = January
- * @return the number of days in the month
- */
-uint8_t furi_hal_rtc_get_days_per_month(bool leap_year, uint8_t month);
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/targets/f7/target.json b/targets/f7/target.json
index d63caf90a..0f0161fe4 100644
--- a/targets/f7/target.json
+++ b/targets/f7/target.json
@@ -49,6 +49,7 @@
         "heatshrink",
         "flipperformat",
         "flipper7",
-        "bit_lib"
+        "bit_lib",
+        "datetime"
     ]
-}
\ No newline at end of file
+}