I went to the Whitby meetup group recently and it was a good bunch of people. Monday, Wednesday and Sunday nights. There are people that stay late but many cut out around 10pm. That is pretty late. They start playing around 7pm. Earlier than that would have worked better for me.
If you want to do a something earlier in the day on weekends that would work well. The Whitby Library has board games so I don't think they would mind people taking up space playing in their neutral space either.
I like strategy and dont mind playing a 3 - 12 hour game.