diff --git a/bsp_q7s/core/CoreController.cpp b/bsp_q7s/core/CoreController.cpp
index e1b48fd2..f8bdb416 100644
--- a/bsp_q7s/core/CoreController.cpp
+++ b/bsp_q7s/core/CoreController.cpp
@@ -480,6 +480,13 @@ ReturnValue_t CoreController::executeAction(ActionId_t actionId, MessageQueueId_
       successRecipient = commandedBy;
       return returnvalue::OK;
     }
+    case (UPDATE_LEAP_SECONDS): {
+      ReturnValue_t result = actionUpdateLeapSeconds();
+      if (result != returnvalue::OK) {
+        return result;
+      }
+      return HasActionsIF::EXECUTION_FINISHED;
+    }
     default: {
       return HasActionsIF::INVALID_ACTION_ID;
     }
@@ -2066,9 +2073,60 @@ ReturnValue_t CoreController::backupTimeFileHandler() {
   return returnvalue::OK;
 }
 
+void CoreController::initLeapSeconds() {
+  ReturnValue_t result = initLeapSecondsFromFile();
+  if (result != returnvalue::OK) {
+    Clock::setLeapSeconds(config::LEAP_SECONDS);
+    writeLeapSecondsToFile(config::LEAP_SECONDS);
+  }
+}
+
+ReturnValue_t CoreController::initLeapSecondsFromFile() {
+  std::string fileName = currMntPrefix + LEAP_SECONDS_FILE;
+  std::error_code e;
+  if (sdcMan->isSdCardUsable(std::nullopt) and std::filesystem::exists(fileName, e)) {
+    std::ifstream leapSecondsFile(fileName);
+    std::string nextWord;
+    std::getline(leapSecondsFile, nextWord);
+    std::istringstream iss(nextWord);
+    iss >> nextWord;
+    if (iss.bad() or nextWord != "LEAP") {
+      return returnvalue::FAILED;
+    }
+    iss >> nextWord;
+    if (iss.bad() or nextWord != "SECONDS:") {
+      return returnvalue::FAILED;
+    }
+    iss >> nextWord;
+    uint16_t leapSeconds = 0;
+    size_t checkPtr;
+    leapSeconds = std::stoi(nextWord.c_str(), &checkPtr, 10);
+    if (iss.bad() or *checkPtr) {
+      return returnvalue::FAILED;
+    }
+    Clock::setLeapSeconds(leapSeconds);
+    return returnvalue::OK;
+  }
+  return returnvalue::FAILED;
+};
+
+ReturnValue_t CoreController::writeLeapSecondsToFile(const uint16_t leapSeconds) {
+  std::string fileName = currMntPrefix + LEAP_SECONDS_FILE;
+  if (sdcMan->isSdCardUsable(std::nullopt)) {
+    std::ofstream leapSecondsFile(fileName.c_str(), std::ofstream::out | std::ofstream::trunc);
+    if (leapSecondsFile.is_open()) {
+      leapSecondsFile << "LEAP SECONDS: " << leapSeconds << std::endl;
+    }
+  }
+  return returnvalue::FAILED;
+};
+
+ReturnValue_t CoreController::actionUpdateLeapSeconds() { ; }
+
 ReturnValue_t CoreController::initClockFromTimeFile() {
   using namespace GpsHyperion;
   using namespace std;
+
   std::string fileName = currMntPrefix + BACKUP_TIME_FILE;
   std::error_code e;
   if (sdcMan->isSdCardUsable(std::nullopt) and std::filesystem::exists(fileName, e) and
diff --git a/bsp_q7s/core/CoreController.h b/bsp_q7s/core/CoreController.h
index 79224ed2..0aa2a690 100644
--- a/bsp_q7s/core/CoreController.h
+++ b/bsp_q7s/core/CoreController.h
@@ -150,6 +150,8 @@ class CoreController : public ExtendedControllerBase, public ReceivesParameterMe
       std::string(core::LEGACY_REBOOT_WATCHDOG_FILE_NAME);
   const std::string REBOOT_WATCHDOG_FILE =
       "/" + std::string(core::CONF_FOLDER) + "/" + std::string(core::REBOOT_WATCHDOG_FILE_NAME);
+  const std::string LEAP_SECONDS_FILE =
+      "/" + std::string(core::CONF_FOLDER) + "/" + std::string(core::LEAP_SECONDS_FILE_NAME);
   const std::string BACKUP_TIME_FILE =
       "/" + std::string(core::CONF_FOLDER) + "/" + std::string(core::TIME_FILE_NAME);
   const std::string REBOOT_COUNTERS_FILE =
@@ -335,7 +337,11 @@ class CoreController : public ExtendedControllerBase, public ReceivesParameterMe
   void performMountedSdCardOperations();
   ReturnValue_t initVersionFile();
 
+  void initLeapSeconds();
+  ReturnValue_t initLeapSecondsFromFile();
   ReturnValue_t initClockFromTimeFile();
+  ReturnValue_t actionUpdateLeapSeconds();
+  ReturnValue_t writeLeapSecondsToFile(const uint16_t leapSeconds);
   ReturnValue_t performSdCardCheck();
   ReturnValue_t backupTimeFileHandler();
   ReturnValue_t initBootCopyFile();
diff --git a/common/config/eive/definitions.h b/common/config/eive/definitions.h
index 0b63a017..4c96c3a5 100644
--- a/common/config/eive/definitions.h
+++ b/common/config/eive/definitions.h
@@ -20,6 +20,9 @@ static constexpr char OBSW_VERSION_FILE_PATH[] = "/usr/share/eive-obsw/obsw_vers
 // ISO8601 timestamp.
 static constexpr char FILE_DATE_FORMAT[] = "%FT%H%M%SZ";
 
+// Leap Seconds as of 2024-03-04
+static constexpr uint16_t LEAP_SECONDS = 37;
+
 static constexpr uint16_t EIVE_PUS_APID = 0x65;
 static constexpr uint16_t EIVE_CFDP_APID = 0x66;
 static constexpr uint16_t EIVE_LOCAL_CFDP_ENTITY_ID = EIVE_CFDP_APID;
diff --git a/mission/sysDefs.h b/mission/sysDefs.h
index 8fade60a..924b1a9e 100644
--- a/mission/sysDefs.h
+++ b/mission/sysDefs.h
@@ -55,6 +55,7 @@ static constexpr char VERSION_FILE_NAME[] = "version.txt";
 static constexpr char LEGACY_REBOOT_WATCHDOG_FILE_NAME[] = "reboot.txt";
 static constexpr char REBOOT_WATCHDOG_FILE_NAME[] = "reboot_watchdog.txt";
 static constexpr char REBOOT_COUNTER_FILE_NAME[] = "reboot_counters.txt";
+static constexpr char LEAP_SECONDS_FILE_NAME[] = "leapseconds.txt";
 static constexpr char TIME_FILE_NAME[] = "time_backup.txt";
 
 static constexpr uint32_t SYS_ROM_BASE_ADDR = 0x80000000;
@@ -93,6 +94,8 @@ static constexpr ActionId_t MV_HELPER = 53;
 static constexpr ActionId_t RM_HELPER = 54;
 static constexpr ActionId_t MKDIR_HELPER = 55;
 
+static constexpr ActionId_t UPDATE_LEAP_SECONDS = 60;
+
 static constexpr uint8_t SUBSYSTEM_ID = SUBSYSTEM_ID::CORE;
 
 static constexpr Event ALLOC_FAILURE = event::makeEvent(SUBSYSTEM_ID, 0, severity::MEDIUM);