About three weeks ago, I did most of my writing in the evenings because I was either physically drained from work or just not in the mental state to document my feelings.
These days, I simply steal time to do it because I don't want to feel constrained by a schedule. Instead, I just work with the fact that I will "certainly write today" and then move forward with it. The randomness is kind of fun.
Writing at nights have some benefits. When insomnia kicks in on some days, writing actually helps you sleep.
Yeah writing at night is a good thing a lot of times, cathartic draining of the crap of the day!
It's good that you're going on a few different times for writing, I've done that recently as well where I will write at night again for a few then the following day write in the morning again. Interesting stuff for sure!