24: 00: 00 is the last moment of the day, and 0: 00: 00 is the beginning moment of the day. 24 o'clock and 0 o'clock are the same time, but the difference is that the former is the end time of the previous day and the latter is the start time of the next day.
The last minute of every day starts at 23:59 (starting at midnight) and ends at 24:00 (ending at midnight). 24:00 on one day is equal to 00:00 on the next day. From 23:59:59.999 to (24: 00: 000)00:00:00.000, you can accurately determine the beginning of a new day. However, the representation method of 24:00 can more clearly determine the end time of the day.
Segmented timing method:
Mathematical terms:
Time is a basic quantity, and its SI (International System of Units) unit is seconds. Usually, the units of time used with the international system of units are days, [hours] and minutes. Common time units are century, year, month and week. 1 day (day) is also a day and night, which is the time for the earth to rotate once. 1 has 24 hours, which can be divided into two sections. The first section is from 12 to noon 12, and the second section is 12 at night.
This method of subsection timing is usually used in life. In order to avoid timing error, transportation and post and telecommunications departments adopt the timing method from 0: 00 to 24: 00. For example, in the afternoon 1, that is 13, and at 2 pm, that is 14.
Textual research: The Dictionary of Practical Mathematics for Primary School Teachers points out that midnight is the beginning of a day, which is called the zero point of a certain day. A 24-hour day is divided into two sections, each of which is 12 hours. From 0: 00 midnight to noon 12 is called morning, and then from noon 12 to midnight 12 is called afternoon. This timing method is called subsection timing method (also called 12 hour timing method). This timing method is often used in life.
Another timing method is the 0 to 24-hour timing method adopted by radio stations, stations, post offices and other departments, which is referred to as the 24-hour timing method. According to this timing method, 1 pm is 13 pm, 2 pm is 14 pm, ... 12 pm is 24 o'clock, and the next day is 0 o'clock.