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.
The question sometimes arises whether midnight is written as 2400 or 0000. Military and emergency services personnel refer to midnight both ways. However, digital watches and clocks that display time in a 24-hour format and computer equipment treat midnight as the start of a new day and express it as 0000.
Converting Times from 12-hour clock to 24-Hour clock
In 24-hour (military) time, 12:00am is equal to 0000 and is read as “0 hundred hours”. 1:00am, or 0100, is pronounced as “zero 1 hundred 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.
Military times 0000 and 2400 are used to signify 12:00 AM / midnight. Military time 1200 is used to signify 12:00 PM / noon.
When most people say 12pm, typically they're talking about the middle of the day: 12 noon. When they say 12am, they normally mean 12 midnight.
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.
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.
But 0:00 is midnight. And 12:00 is noon–or midnight.
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).
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.
Speaking military time.
For example: 0001 (12:01am): “zero zero zero one” 0215 (2:15am): “zero two fifteen”
12 Noon | 12 Midday | 12 Midnight
There are no standards established for the meaning of 12 a.m. and 12 p.m. It is often said that 12 a.m. Monday is midnight on Monday morning and 12 p.m. is mid-day.
0000 is at the beginning of the day, and 2400 is the same moment, but at the end of the previous day. So Sunday 2400 = Monday 0000.
As we normally count hours numerically adding 1 to the previous hour and as in a normal sequence 12 comes after 11 if it is then 11pm midnight must be 12pm and at the same time 00.00am so 1 minute past midnight is 00.01am the same applies to noon 11am being followed by 12am and at the same time being 00.00pm.
24:00 is midnight of the next day. 00:00 is midnight of the current day. That's the difference.
24-Hour Time uses the numbers 00:00 (midnight) until 23:59 to tell the time.
2400 in words is written as Two Thousand Four Hundred.
It's no surprise that midnight is the very middle of the night, the word itself stemming from the Old English mid-niht, from mid, "among" or "in the middle of," and night, from niht, which appropriately means both "night" and "darkness."
0:30 = 12:30 AM. 0:55 = 12:55 AM.
The reason a new day starts at 12:00 goes back to ancient Egypt when the day was measured using sundials. The shadow on the face of a sundial tells the time, and the shadow depends on where the sun is in the sky. "When the sun is highest overhead and the shadow goes straight up to the top of the sundial, that's noon.
A “Jody” gets to enjoy all the things the Marines are missing, more specifically the Marine's girlfriend back at home.
The Navy Department Library
The use of the term "head" to refer to a ship's toilet dates to at least as early as 1708, when Woodes Rogers (English privateer and Governor of the Bahamas) used the word in his book, A Cruising Voyage Around the World.
A Navy shower (also known as a "combat shower", "military shower", "sea shower", "staggered shower", or "G.I. bath") is a method of showering that allows for significant conservation of water and energy by turning off the flow of water in the middle portion of the shower while lathering.