diff --git a/applications/debug/locale_test/locale_test.c b/applications/debug/locale_test/locale_test.c
index 003df55dca..a7cbd52f80 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 0000000000..42bc7dbed7
--- /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 e3e44291fa..a75615d0c0 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 7ae9ca03d5..60132a1616 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/nfc/plugins/supported_cards/clipper.c b/applications/main/nfc/plugins/supported_cards/clipper.c
index c24043be08..00820721a4 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/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/itso.c b/applications/main/nfc/plugins/supported_cards/itso.c
index 94d2580257..2385696d7d 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/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/opal.c b/applications/main/nfc/plugins/supported_cards/opal.c
index 4ec38208c3..b994733aff 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/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/umarsh.c b/applications/main/nfc/plugins/supported_cards/umarsh.c
index 959b2eeb0a..1d902a1db8 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/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/services/cli/cli_commands.c b/applications/services/cli/cli_commands.c
index 9a73add225..9450b915ba 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 ec0f2a804d..5fcf4dd345 100644
--- a/applications/services/desktop/desktop.c
+++ b/applications/services/desktop/desktop.c
@@ -48,7 +48,7 @@ static void desktop_lock_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 ab2b883837..d30c2ba02f 100644
--- a/applications/services/dolphin/dolphin.c
+++ b/applications/services/dolphin/dolphin.c
@@ -129,7 +129,7 @@ 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 277b2963cb..6d493ade68 100644
--- a/applications/services/dolphin/helpers/dolphin_state.c
+++ b/applications/services/dolphin/helpers/dolphin_state.c
@@ -73,9 +73,9 @@ 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 e8b6a9fc53..4f7eb90ecc 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 61fb4c6055..c4f8e78e5a 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 96a189ad3b..0b9fd33f95 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 a72c2ed88d..56cd14aa36 100644
--- a/lib/SConscript
+++ b/lib/SConscript
@@ -45,6 +45,7 @@ libs = env.BuildModules(
         "xtreme",
         "heatshrink",
         "bit_lib",
+        "datetime",
     ],
 )
 
diff --git a/lib/datetime/SConscript b/lib/datetime/SConscript
new file mode 100644
index 0000000000..99fc0ec5da
--- /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 0000000000..7b1f73dd0f
--- /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 0000000000..1dabf72408
--- /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 a15b25ed47..a8d0ff2804 100644
--- a/lib/lfrfid/protocols/lfrfid_protocols.c
+++ b/lib/lfrfid/protocols/lfrfid_protocols.c
@@ -20,7 +20,8 @@
 
 const ProtocolBase* lfrfid_protocols[] = {
     [LFRFIDProtocolEM4100] = &protocol_em4100,
-    [LFRFIDProtocolEM4100_32] = &protocol_em4100_32,
+    [LFRFIDProtocolEM410032] = &protocol_em4100_32,
+    [LFRFIDProtocolEM410016] = &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 ce14ca1c93..64a9fcba2e 100644
--- a/lib/lfrfid/protocols/lfrfid_protocols.h
+++ b/lib/lfrfid/protocols/lfrfid_protocols.h
@@ -9,7 +9,8 @@ typedef enum {
 
 typedef enum {
     LFRFIDProtocolEM4100,
-    LFRFIDProtocolEM4100_32,
+    LFRFIDProtocolEM410032,
+    LFRFIDProtocolEM410016,
     LFRFIDProtocolH10301,
     LFRFIDProtocolIdteck,
     LFRFIDProtocolIndala26,
diff --git a/lib/lfrfid/protocols/protocol_em4100.c b/lib/lfrfid/protocols/protocol_em4100.c
index 38d6bcb82d..05952110df 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 b19a29705b..23af66e279 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 7d6d6d298e..4b24b742a4 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/targets/f18/api_symbols.csv b/targets/f18/api_symbols.csv
index c6d0c40705..6d994653bd 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,,
@@ -730,6 +731,12 @@ 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*
@@ -1263,12 +1270,9 @@ 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,
@@ -1283,11 +1287,10 @@ 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
@@ -1300,8 +1303,6 @@ 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
@@ -1698,8 +1699,8 @@ 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 a8669f552a..43e9254cd4 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 a2f60f7544..c33b047eb1 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/main/archive/helpers/archive_helpers_ext.h,,
 Header,+,applications/main/subghz/subghz_fap.h,,
@@ -50,6 +50,7 @@ Header,+,applications/services/rpc/rpc_app.h,,
 Header,+,applications/services/storage/storage.h,,
 Header,+,build/icons/assets_icons.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,,
@@ -839,6 +840,12 @@ 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*
@@ -1512,12 +1519,9 @@ 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,
@@ -1532,11 +1536,10 @@ 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
@@ -1549,8 +1552,6 @@ 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
@@ -2200,8 +2201,8 @@ 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/f7/fatfs/fatfs.c b/targets/f7/fatfs/fatfs.c
index 5a8912cbdb..0e17f75c16 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 88aad6858e..cd4fa8b9b3 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 71068c8bb7..36b297d29c 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 0405df4b54..268c3d6cf1 100644
--- a/targets/f7/target.json
+++ b/targets/f7/target.json
@@ -50,6 +50,7 @@
         "heatshrink",
         "flipperformat",
         "flipper7",
-        "bit_lib"
+        "bit_lib",
+        "datetime"
     ]
-}
\ No newline at end of file
+}