diff --git a/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java b/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
index 251da4be..8fd4e567 100644
--- a/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
+++ b/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
@@ -507,7 +507,14 @@ public class MicroPhotoService extends Service {
                 }
 
                 // Register Next Photo Timer
-                long startTime = (ts == 0) ? (((new Date()).getTime() + 999) / 1000 + 1) : (ts + 1);    // Add one second
+                long startTime = (System.currentTimeMillis() + 999) / 1000 + 1;
+                if (ts != 0 && (startTime - ts) < 86400) {
+                    // Ts != 0 means schedule time
+                    // if ts is not during a day, the time is wrong, just use current system time
+                    // if ts is valid schedule time, will use next time point
+                    Log.e(TAG, "Current Photo Timer(" + ts + ") is wrong and use current system time");
+                    startTime = ts + 1;
+                }
                 mService.updateCaptureSchedule(startTime);
             } else if (TextUtils.equals(ACTION_HEARTBEAT_MANUALLY, action)) {
                 Log.i(TAG, "HB Timer Fired ACTION=" + action);