[OnAMission]

I'm no sleep expert, but from what I understand, go-to-sleep times and wake-up times are only loosely correlated. I know from my kids, even if we have a late night for some reason, they still wake up at pretty much the same time. One other thing I've observed is that sleep begets sleep. To a certain extent, my kids will sleep longer stretches (and sometimes later in the morning) if they go to bed *earlier* instead of keeping them up later.