I'm having this weird issue. Since I built my pc (2 years ago), my timezone on my pc is wrong. It uses UTC-08, except I'm UTC-05. Never really cared, but thought that it'd be worth fixing now lol
Though, when I try to change it, the option is kinda greyed out: https://prnt.sc/5zqkt9pPZzub
I saw that you needed to be an admin to do it, and I am:
https://prnt.sc/VeVwZDIVYtdw
I know I can set it manually, but I'm pretty sure that I once tried that, and it just reset whenever I rebooted my pc.