A free program for Android, by Aaadbic.com.

Universal Clock Widget 2021 – Fully Customizable is an easy-to-use application with a wide range of customizable options. It allows you to create the best widget with a clock, and you can change its appearance and size as you like.

You can place an unlimited number of clocks with different time zones within one widget, and the number of clock blocks is limited by common sense, your visual acuity, and the processing power of your device.

After installing the application, you should disable monitoring of its activity. It is not possible to use the application with restrictions as there are imposed by the system and cannot be fixed from the application.