Originally Posted by Minsc
I think you center it around the middle of the day.
Minsc, I tried moving the nap from the evening to the afternoon (Straight to the Bar: Napping in the afternoon
talks about how it went), but it didn't work for me personally. The current routine - a 90 minute nap starting around 7-7:30pm, and 4.5 hours' core sleep starting at 2-2:30am, works for me.
Pavel, regarding sleep before midnight rather than sleep after, two of the main reasons for starting the core sleep so late are :
1. the start time is about when I went to bed anyway during monophasic sleep (so the adaptation is that much easier)
2. the end time aligns with the time that other people in my life wake up, so there are minimal feelings of experimentation and isolation.
The quality of sleep at these times has also turned out to be extremely high.