Sunday Brunchday SUNDAY. You could check out one Denver brunch spot this weekend, but why stop at just one? Why not 20? BrunchFest returns to Civic Center on Sunday, when you can, as its slogan says, “brunch so hard.” From 11 a.m. to 2 p.m. on Bannock Street between 14th and Colfax Avenue, some 20 local restaurants will break out the bottomless brunch bites and booze.