It won't be until Sept. 25 that the day and night are truly equal (sunrise is at 6:52 a.m., ... In fact, at the end of nautical twilight most people will regard night as having begun.

And then, at last, the black of night will reign once again. There’s a poetry to it, a liminal feeling of being between two existences, that of night and day.

Whether you’re an early riser or have stayed up all night, learning the three kinds of twilight will ensure you can catch the radiant atmospheric light show. Scattered light On a clear day, the ...