North Carolina in the town of Willstead.
Meg feels scared and confused because she doesn't feel or see Calvin O'Keefe & Charles Wallace, because she was holding their hands.
2:00 AM on the day of the time cange.
Time is always right and always wrong. Objectively it depends on which time measurement you are using as there are many different ways of measuring the passage of time. The SI unit is the second....
It means when something good happens randomly or lucky and you were there.