I don’t know this is Antergos or Gnome problem.
System and other file modified and accessed dates are always one day wrong with real date. When looking richt click system or other file Properties dates are correct?

Is there a fix?
Could this make a system unstable?

I think it have to do with other problem:
In settings > region & language > language and format are impossible to change and stay fix at English Australia while i live in Europe. In same window Input source i can change.
Is there a fix for this?

Other related question: not possible to find were to change in calendar settings the first day of the week. In Europe it’s monday but it stays on Sunday?
Little bit confusing when i have to be at my job! :-)