Nighttime is tough for me. The later it gets, the tougher it gets. I was almost exclusively a late-night, closet drunk, after m y wife would go to bed, so my 'tough time' is after 11pm, for sure.
Happy-hour-:30? Best time of the day to go for a walk. Take the dog out! Don't got a dog? Go get a dog! Then... take it out!