Homeassistant will show wrong timestamps if you set privacy.resistFingerprinting in Firefox about:config
Incorrect time in Home Assistant, time zone is set correctly though
I got paranoid after seeing my windows and doors being open when I was not at home, turns out I was looking at a graph with time in UTC. 😃
This isn't a home assistant thing, this is a Firefox thing. Firefox will use UTC to resist fingerprinting browser wide, meaning all sites, not just home assistant
there's a timezone setting in the user settings, but setting it to use the server timezone did not really help for me.
you can also add certain domains to the resistfingerprinting whitelist. I believe its done with the privacy.resistFingerprinting.exemptedDomains pref
Timezones are a pretty good identifing aspect to your browser so enabling privacy stuff often messes that up.
Yeah resistFingerprinting unfortunately breaks a lot of stuff.
Like fingerprinting. Or at least makes it a bit harder to figure out who what and where you are.