Hard to imagine skipping breakfast, lunch, coffee/tea w/milk & cream, and all snacking during the day, everyday is normal outside America. Isn't burned bread with beans or butter for breakfast a thing in the UK?

16:8 means if your last calories are before 10PM, you wouldn't eat anything at all until after 2 PM. And this would be every day, not every other day.

12:12 might be more common, but not consistently.