This is an app coding by Python and it uses "Thread" parallel processing.
You can see time in world clock.
To create .exe file follow:
1- Offing Real-time protection system.
2- Install Pyinstaller by this command in terminal: pip install -U pyinstaller
3- Create .exe file by this command in terminal: pyinstaller main.py
4- Copy icon.png, alarm_list.db and Seven Segment.ttf to dist folder next to the main.exe file.
5- Run main.exe in dist folder