By default, SyncTime appears both in the Dock and in the status bar. Only apps that appear in the Dock are listed in the Force Quit window ( > Force Quit). If you disabled the option to show SyncTime in the Dock, in order to force quit it, follow these steps:
- Open the Activity Monitor app (from /Applications/Utilities).
- Type the name of the app in the search field.
- Click the Terminate button in the toolbar (with a cross icon) and confirm the alert dialog that appears afterwards.