I think working hours 12-20 suit me well. I always used to think being in a late timezone was an advantage because I could be productive in the morning then have my 'morning' meetings in the post lunch slump. But today I had a slow start, bopped around a bit, then had my 'morning' meetings after lunch and rode the second-wave of productivity to work into the evening. Which felt better than trying to force myself to wake up and start working immediately like a normal human.