My two younger kids (middle schoolers) both go to bed around 9:00 when it gets dark early. They put in a hard day of activities, school etc. and they are tired. Sometimes you will see my youngest asleep by 8:30 in the winter.
But when the time changes and it stays lighter longer it's seems none of us can go to bed early anymore. So I guess I wish they would leave it alone in the Spring for school related reasons. Try to get a child up early that stayed up late.
Long days are for summer vacation time.