Daytime.

Mostly because I can't drive at night. Something weird about contacts or something, idk, but it's pretty much impossible for me to drive at night. The streetlights blur my vision and it's just scary and annoying, as I love driving. I also like going to parks with my kids and playing outdoors and... daytime is also significantly warmer than nighttime, usually... and i like being warm. I duno, it's just so much nicer in the daytime ^^