Use APKPure App
Get Timezone clock quicksetting old version APK for Android
Display time in a custom timezone directly in the notification bar
Display the time in a custom timezone, directly in the notification tray.
No need for a custom widget on your home screen: this app will display a clock for any timezone in the world directly within the quick settings area of Android.
Android Nougat required.
More than 500+ timezones supported, with Daylight Saving time information.