This is how I always worked over a 15 year developer career. I’d get in at 6 maybe take a 2 hour lunch break and then put a few more hours in until around 4pm

This is how I always worked over a 15 year developer career. I’d get in at 6 maybe take a 2 hour lunch break and then put a few more hours in until around 4pm as a standard pattern. The vast majority of useful work I ever did was between the hours of 6-9am.