How to divide 24 hours a day?

A 24-hour day starts at 23: 59 and ends at 24: 00.

In 24 hours, a day starts at midnight, and the last minute of every day starts at 23: 59 and ends at 24: 00.

24: One day is equivalent to: The next day. The digital clock shows from: to 23: 59, and never shows 24:.

That's it, from 23: 59: 59,999 to::. We can accurately determine the beginning of a new day.

However, the notation of 24: can determine the end time of the day more clearly.