I'm continually astonished at the times of evening activities aimed at junior-aged children. In the last couple of weeks we've been invited to 4 different mid-week activities starting at 7 or 7.30pm.
My boys are 7 and 9, but by 7 pm they are both upstairs reading or playing quietly (alone) before going to bed/sleep.
DS2 (7)
Upstairs: 6.30 pm
Lights off: 7.30 pm
Asleep: by 8 pm usually
Wakes next day: 7 am
DS1 (9)
Upstairs: 7 pm
Lights off: 9 pm
Asleep: by 9.30 pm usually
Wakes next day: 7.20 am