diff --git a/GsmWithGnss.c b/GsmWithGnss.c
index c18c502..74f20a9 100644
--- a/GsmWithGnss.c
+++ b/GsmWithGnss.c
@@ -131,6 +131,8 @@ void GsmWithGnssInit(
 
     env->gnssRmcGga.rmcAccess = osMutexNew(NULL);
 
+    env->isRtcACP = false;
+
 }
 
 
diff --git a/GsmWithGnss.h b/GsmWithGnss.h
index b9be51d..ae9b961 100644
--- a/GsmWithGnss.h
+++ b/GsmWithGnss.h
@@ -84,6 +84,8 @@ typedef struct {
 
     tSocketGsm socketGsm;
 
+    bool isRtcACP;
+
 } tGsmWithGnss;
 
 //Common
diff --git a/GsmWithGnss_GnssOps.c b/GsmWithGnss_GnssOps.c
index 1bda8a7..85573bb 100644
--- a/GsmWithGnss_GnssOps.c
+++ b/GsmWithGnss_GnssOps.c
@@ -114,6 +114,19 @@ void AtGsm_Gsnss_GetNMEA_Pack(tGsmWithGnss *env, uint32_t timeout) {
 
             memcpy(&env->gnssRmcGga.currentRmc, &env->gnss.currentAcp, sizeof(env->gnss.currentAcp));
 
+            if (env->gnssRmcGga.currentRmc.time.second != 0) {
+                if (env->isRtcACP == false) {
+
+                    time_t timestamp;
+                    timestamp = iNmea0183TimestampFromRmc(&env->gnssRmcGga.currentRmc);
+
+                    if (timestamp > 1733817613) {
+                        env->isRtcACP = true;
+                        RtcSet(env->Rtc, &timestamp);
+                    }
+                }
+            }
+
             env->gnss.success = true;
         }
     }