My question might be look like a Superuser question but I want to write a script or code which one modifies a time zone's time difference value ie from +2 to +3 bec. of Windows 10 computers cannot update themselves automatically. I have to install cumulative update which one larger than 1GB.
I need to modify current time zone's (Istanbul) time different value from UTC +2 to UTC +3. That's it. As a workaround we are using Moscow UTC +3.
There is no standalone update to make Istanbul UTC +3 so I am asking here where can I modify a time zone in Windows 10? There are also Windows XP boxes and imho Microsoft won't publish updates for them.