For some reason most of us are too afraid of just going home at 5:00 much less asking for reduced hours.
My whole working life, I've never used an alarm clock, and I never stayed late unless I was late on a commitment that I made. (This is not the same as some artificial deadline dreamed up by someone else.)
I come in late, go home early, sometimes I don't even show up—whatever.
If you do this consistently, and deliver in your role of course, people will get used to it and they'll stop bothering you about it.
My whole working life, I've never used an alarm clock, and I never stayed late unless I was late on a commitment that I made. (This is not the same as some artificial deadline dreamed up by someone else.)
I come in late, go home early, sometimes I don't even show up—whatever.
If you do this consistently, and deliver in your role of course, people will get used to it and they'll stop bothering you about it.