Always getting timezone issue with proxies

I get this kind of notice when I check the proxies. I tried all the obvious approaches to match the timezone on the device, in antidetect, etc, but always this notice comes. Is there some solution to fix this? Or does it not even matter so much?

I would guess this is an issue with the site not being able to figure out the exact timezone / local time using its GeoIP service. As this time is related to the IP address unfortunately there's not much you can do about it apart from trying a different IP / proxy.

That being said, it could be a non-issue and just the site you're using and it's GeoIP database. Have you tried other sites? browserleaks.com/ip also reports location and timezone so you could check there.

What sort of site this is?

Check with whoer.net and pixelscan.net

If you still have issues then your proxies or software are leaking.