I've checked several wiki's and none of them seem to agree on what the hours of operation are for the stores in the game. Here is what I have so far and I am just curious if anybody can fill in the missing information? I just don't have most of the shops yet and I acan only confirm the Night Owl Ordinance of The Able Sister, Nook Homes, the Garden Center and Nookling Junction.
I am pretty sure of anything not marked but feel free to double check. I'm actually really surprised how hard it was to find what I did.