XYplorer Beta Club

This is a method of starting Dark Mode 1 hour before sunset and stopping Dark Mode 1 hour after sunrise .
This is achieved from starting XYplorer from shortcut . It will download a htm file (which you will have to find and insert at beginning of DarkSchedule.xys).

Here are a few I've found, there are many more.
https://www.timeanddate.com/sun/germany/cologne
https://www.timeanddate.com/sun/@12321679 -mazotin France
https://www.timeanddate.com/sun/france/paris
https://www.timeanddate.com/sun/@4717560 -paris texas USA
https://www.timeanddate.com/sun/india/mumbai

Once it is setup it will automatically change to Dark Mode and switch off Dark Mode at appropriate times.

Extract the 3 scripts to the scripts folder. Create shortcut to XYplorer . Open the shortcut and type in "/script="DarkSchedule.xys" in the target row

I was working on my tablet and suddenly realized that Dark Mode hadn't worked . On investigating found that it wouldn't work unless on AC power.
The only way to change the setting was by using Powershell. So here is the new script .