Hah, that Google experience clicking though closed closed closed... Okay fine, i will accept my stupidity for even considering this approach. Wont happen again.
Oh I didn't find it, I have to say I don't use google maps very much. I normally use OSMAnd only. But most businesses don't bother updating their opening hours on openstreetmap.
If you dont fill out openings hours or if you dont even claim your business google maps lists it as open.