Bedtime for toddler/preschooler

Trying to make a point to my husband. I think our son(4yo) should sleep based on his needs which typically seems to be about 12 hours of sleep. He doesn’t nap, hasn’t in 2 years. So he wakes about 7/7:30(depending on the day) and in bed about 7:15(always asleep by 8, usually by 7:30 though). My husband thinks a 4 year old should be going to bed later. I don’t think the actual time is important if they are getting adequate sleep.

So, please tell me the wake and bedtime schedules for your kids(please include their age). Thank you!