Breakfast - between 6 and 8 (weekday/weekend dependant). Accept will be later if you have a long lie in - I have small kids so it doesn't happen.
Lunch - between 12-1.30
Dinner - generally between 6-8 - could be as early as 5 for small children.
Bedtime - between 9.30-midnight for adults under normal circumstances, no special events. Between 7-8.30 for youngish children.
I have a friend who constantly gaslights me about this. I'm crazy that my kids go to bed at 7 (they are ready for bed then and always wake before 7 regardless). I invite her round at 2pm and she brings HER OWN LUNCH because 'i eat so early and she couldn't possibly'. Is she trying to be every so continental or something?!
This is light hearted, don't care when people eat on their own time but my timings align with the majority of the population and the work/school day do they not?!