In 24-hour (military) time, 12:00am is equal to 0000 and is read as “0 hundred hours”.
Military time is a way to tell time using 24 hours. The day starts at 0 hours and ends at 24 hours.
Midnight is called 24:00 and is used to mean the end of the day and 00:00 is used to mean the beginning of the day. For example, you would say "Tuesday at 24:00" and "Wednesday at 00:00" to mean exactly the same time.
In the 24-hour time notation, the day begins at midnight, 00:00 or 0:00, and the last minute of the day begins at 23:59. Where convenient, the notation 24:00 may also be used to refer to midnight at the end of a given date — that is, 24:00 of one day is the same time as 00:00 of the following day.
Midnight in military time
In the 24-hour format, midnight has two designations, 0000 and 2400: If your day begins at midnight, you use 0000 in military time, pronounced zero hundred hours. If your day ends at midnight, you end your day at 2400, pronounced 24 hundred hours.
24:00 is midnight of the next day. 00:00 is midnight of the current day. That's the difference.
Military time operates on a 24- hour clock that begins at midnight which is referred to as 0000 hours, with 1:00 a.m. being 0100 hours, 2:00 a.m. being 0200 hours, etc. all the way to 11:00 p.m. being 2300 hours. The most notable difference between regular and military time is the manner in which hours are expressed.
Speaking military time.
For example: 0001 (12:01am): “zero zero zero one” 0215 (2:15am): “zero two fifteen”
Any given time of day is expressed in four digits. The day in military time begins at midnight with 0000, pronounced "zero hundred hours" or simply "zero hundred." You then add one hundred for each hour, so 1 a.m. is 0100 (zero one hundred) hours, 2 a.m. is 0200 (zero two hundred) hours and so forth.
How to Say 0030 (12:30 AM) in Military Time. You can say as: “Zero Zero Thirty hours.”
The cut-off time for placing an order is 24H00, meaning that the delivery term starts at 00H00 of the next day.
Midnight itself can be stated as minuit, 24h00, or 0h00, but one minute later, 24 disappears: 0h01, 0h02, etc. While you definitely need to be able to understand the 24-hour clock, you don't necessarily need to talk about time with it.
For instance, 1:00pm + 12 = 1300hours, 2:00pm + 12 = 1400hrs and is pronounced 14 hundred hours.
Another convention sometimes used is that, since 12 noon is by definition neither ante meridiem (before noon) nor post meridiem (after noon), then 12am refers to midnight at the start of the specified day (00:00) and 12pm to midnight at the end of that day (24:00).
Alternatively, you could use the 24-hour clock system, where 12:00 is noon and 00:00 (or 24:00) is midnight.
4:00 a.m. — 0400 hrs. 5:00 a.m. — 0500 hrs. 6:00 a.m. — 0600 hrs. 7:00 a.m. — 0700 hrs.
12:20 AM is based on a 12-hour clock format. 12:20 AM is used in most english-speaking countries.
12:32 AM using 12-hour clock notation, 00:32 using 24-hour clock notation.
This means that 2000 military time is not pronounced as "two thousand", but as one of the following: "Twenty hundred" "Twenty zero zero"
Military Time 0003 is: 12:03 AM using 12-hour clock notation, 00:03 using 24-hour clock notation. Military time notation is based on 24-hour clock.
This standard notates midnight as both 0000 and 2400 but advises that 0000 is preferred as it generally refers to the start of a day. Many military personnel will see both 0000 and 2400 being used as a reference to the beginning or the end of the day.
The ancient Egyptians are seen as the originators of the 24-hour day. The New Kingdom, which lasted from 1550 to 1070 bce, saw the introduction of a time system using 24 stars, 12 of which were used to mark the passage of the night.
Our 24-hour day comes from the ancient Egyptians who divided day-time into 10 hours they measured with devices such as shadow clocks, and added a twilight hour at the beginning and another one at the end of the day-time, says Lomb. "Night-time was divided in 12 hours, based on the observations of stars.