I know it’s a weird way to put it but I can’t think of another.
Okay, so when I type in the date command into dom0, I get the correct time zone. When I type timedatectl status into dom0, same thing. When I type them into personal or any other qube, no issues.
BUT when I open Thunderbird, it seems my time zone is set to Berlin. This computer came from that time zone, so no surprise there, but any attempt to change the time zone to the correct one only changes the “surface” clock, not whatever is making Thunderbird think I live in Germany. What’s going on and how do I fix it?
If it’s not that, can you press Ctrl+Shift+J in Thunderbird to open the JS error console? Then type Date() and hit return. Does it show what you expect?
Is your TZ environment variable set? What is it’s value?
Actually, solved threads are not closed on this forum, exactly because someone could have the same issue for different reason, or to add something later.