Night night, when is the night? When is it too late?

From 0: 00 to 1: 00, it's still early, and it's dry on the day of the column; From 23: 00 to 0: 00, it was a night, and the sun column remained the same, but it was dry and must be used the next day. As for the later children, there is no conclusion, unless they are really masters of life science, they can directly judge a special life from this time.

Otherwise it will never end.