I always liked 7am just because of how happy it was. I have a lot of nostalgia for playing at that time before school and saying hi to all my Normal and Jock villagers.
I didn't vote for 9pm, but I feel as if that track is criminally underrated.
It's a tie between 7 and 8 pm, both are for sure relaxing and peaceful. But if I had to choose between the two, probably 8 pm, I like how it's a remix of the main title theme.
I love the 8am music (I admittedly don't hear it that often), I also love 10am and 11am. So I'm a fan of the chirpy happy morning tunes!
It probably sounds weird but 8pm and 1am make me feel sad when I hear them.