The day runs from midnight to midnight and is divided into 24 hours from 0 (midnight) to 23. The abbreviations AM and PM are from Latin:

The day is split into two 12 hour periods running from midnight to noon (AM hours), and noon to midnight (PM hours). Atlantic, Alaska, Hawaii-Aleutian, Samoa, and Chamorro Time Zones cover the rest of the United States, including Alaska, Hawaii, and the other U.S. The table below shows the conversion between the 12 hour and 24 hour clock systems: 12 hour clock

In the 12 hour clock method, it is 12:00 twice a day at midnight (AM) and noon (PM). Most countries prefer the 24 hour clock method, but the 12 hour clock is widely used in Latin America and English-speaking countries. First there's the 12 hour clock that uses AM and PM, and then there's the 24 hour clock. It is the basis for time zones around the world, which are defined as. Convert timezones and find the best time for your meeting in UTC is expressed as a 24-hour clock, with the time running from 00:00 to 23:59 hours.

World time clock converter