Persistence preset: localized timezone for displayed time

I reboot TAILS (2.9.1) often and I find it a hassle to reset the timezone myself (on the GUI) each time. On the other hand, if I don’t reset it, I find it disorienting to work with a time on the screen that’s not my local time (like if someone asks me what time it is I have to calculate that in my head).

I know if my timezone is added to the persistence it’s just one more thing an adversary could hack, but if someone did hack my system my timezone isn’t going to worry me much: it’s much more functional for me to have a clock accurate to my timezone to work under.

I think other users may feel the same.

Related issues

• Related to #5774
• Related to #10434
• Blocked by #10819 (closed)
• Blocked by #6284

Original created by @Velexx on 12094 (Redmine)