I like 8 a.m. and 3 p.m. the best! I like a lot of the late morning and early afternoon ones because that's when I usually play and they generally sound pretty happy and upbeat.
7 pm is the best! I spend the most time playing between 3-5 pm and 8-10 pm so I hear a bit too much of that music. I think there's still some of the hourly music I've never heard because I never play in the early morning.
5pm has always been the one I like to listen to the most, something so relaxing about playing at this time. Tend to only hear it on weekends when my schedule is more free!
1am, 4am and 7 am are my favorites. I've heard 7pm so many times as I'm usually playing at that time but I still love it nonetheless. I fell in love with the 1am music when I was listening to the whole acnl OST, and 4am was due to a time traveling accident.