Crack of Dawn

My kids go to bed at 8pm.

At home, they go to bed at 8PM, and as far as they know, the rest of the world also goes to bed at 8pm, except me and Steve. How would they know otherwise?

When we go to NY, people still bustle around, but they are far, far away, down on the street.

At Hampton Beach, the people are right outside your window, propped open because of the heat, and you can hear their conversation.

I overheard Nathan muttering to his brother: It's the crack of dawn and people are still walking around out there.

It was 9PM.

Someone should explain to Nate that 9PM is still a good time for adults to be awake. It's 5AM, when he wakes up, which is the crack of dawn.