Can you please show me an equivalent command to insert to achieve then the proper time that also withstands rebooting into the respective Operating systems_?

Follow the instructions below to fix the windows time, it make it use the UTC.

https://doc.iosenag.net/windows/utc-clock.html

Suggestion (as recommended in the web and like I do it):
Set the bios time to UTC.

Search the web for an instruction how to set Win10 to UTC time too, its a registry hack (I did that for Win7 log time ago).

i am dual-booting the laptop that is of US origin
and has Windows 10 installed< (CE Time)

now on another disk it runs now effectively Devuan,
and the issue is that after i login to Devuan , the time becomes +1 ( i dont know exactly why, but probably because it is here greenwhich +1)

now if i set the time right in Devuan, then afterwards log into Windows , then the time is messed up there (CET -1)

effectively it is a mess<
i was hoping to set the time right in BIOS and that should be about it, but it seems the operating system is changing time by itself easily and changing BIOS time<

now the solution on Ubuntu has been to insert this command

sudo timedatectl set-local-rtc 1

but i cannot insert this on Devuan.

Can you please show me an equivalent command to insert to achieve then the proper time that also withstands rebooting into the respective Operating systems_?

Thank you very much.