diff --git a/common/src/main/ets/default/TimeManager.ts b/common/src/main/ets/default/TimeManager.ts
index 6a5c81cac238175abf2062f77937ba052b563f41..bf0704f2102af574b48cee829359f3b14a128125 100644
--- a/common/src/main/ets/default/TimeManager.ts
+++ b/common/src/main/ets/default/TimeManager.ts
@@ -73,7 +73,17 @@ class TimeManager {
   }
 
   public formatTime(date: Date) {
-    return concatTime(date.getHours() % (this.mUse24hFormat ? 24 : 12), date.getMinutes());
+    let hours = date.getHours();
+    if (this.mUse24hFormat) {
+      hours = hours % 24;
+    } else {
+      hours = hours % 12;
+      // hours should show 12, not 0.
+      if (hours == 0) {
+        hours = 12;
+      }
+    }
+    return concatTime(hours, date.getMinutes());
   }
 
   private async initTimeFormat(context: any): Promise<void> {