Find some nerds who live near you, I guarantee they know the best place, we can’t answer your question as it highly depends on which country you live. Not saying you should tell us either.
Honestly the first one is the only one that works when people define the first day of the week differently. On the other hand, it does make you wonder. If Sunday is the first day of the week (as it is in many places) then how is it also part of the weekend?
Funny I recently had someone ask the same thing. This is pretty much the only route you can go. And 🏴☠️ sadly the only reliable one (if the software is popular enough)