nixos-config/components/timezone.nix

{ lib, ... }:
{
  # some system stuff
  # -----------------
  time.timeZone = lib.mkDefault "Europe/Berlin";
  #time.timeZone = lib.mkDefault "Pacific/Auckland";
  #time.timeZone = lib.mkDefault "Asia/Singapore";
  #time.timeZone = lib.mkDefault "Asia/Makassar";
}