Tthis setting is not intended to apply to websites. With this setting you can change whether the date is shown as absolute (dd.mm.yyyy) oder relative (today, yesterday,…) for your own files on your computer.

The option is called “relative date” (as opposed to absolute date). On macos you can switch it off:

• open Finder, go to list view
• select very first item in hierarchy
• click on the little triangle next to the (folder-)icon to expand but press the option key wihle doing so
• hit “cmd” + “J” - a settings panel will open
• there is a tick box that says “relative date” that needs to be disabled (unticked)
• if you want to apply this settings as the new default setting for all finder windows, press the “apply as standard”-button at the bottom. All dates will show now the actual date instead of “today”, “yesterday” and such.