![]() ![]() In 24-hour clock time, we express time in four digits. is used to express time between 12 o’clock noon to 12 o’clock midnight. is used to express time between 12 o’clock mid night to 12 o’clock noon and p.m. to represent the time of the day in 12-hour clock. These are some more examples: After midnight 00:10 a.m. Therefore, the time which is shown by the inner circle is the time before noon and that shown by the outer circle is the time after noon. Similarly, to convert the 12-hour clock time into 24-hour clock time between 12 noon and 12 midnight, we add 12.įor example, 11:30 p.m. (7:15 + 12:00)įrom the above examples, we can conclude that between 12 midnight and 12 noon the 24-hour clock time is same.įor example, 10 40 hours = 10:40 a.m., 08 20 hours = 8:20 a.m., 11 30 hours = 11:30 a.m.īut between 12 noon and 12 midnight to convert the 24-hour clock time into 12-hour clock time, we subtract 12 from the 24-hour time.įor example, 19:30 hours = 19:30 – 12:00 = 7:30 p.m. (iv) 10:25 in the evening is denoted by 22 25 hours. (iii) 6 in the morning is denoted by 06 00 hours. (i) 12 midnight is denoted by 24 00 hours or 00 00 hour. Let us understand 24-hour system by considering some examples. In a 24-hour clock system, we start counting the time from midnight. The inner circle has 1 to 12 numbers while the outer The first two digits represent hours and the last two digits represent the minutes.Ĭoncentric circles. In a 24-hour clock system, we express time in four digits. Some departments like railways, Airlines, etc use 24-hour clock system because they do not use a.m. The hour hand of the clock goes round the dial twice a day (24 hours). is to be used with it.ġ345 hours 01:45 p.m. If the numeral formed by the first two digits from the left is greater than 12, the difference between the number and 12 gives the number of hours after noon and so p.m. If the numeral formed by the first two digits from the left is less than 12, it denotes the number of hours before noon and so a.m. The numeral formed by the two digits from the right denotes the number of minutes.Ģ. Subscribe to and receive customized updates delivered straight to your inbox.In the 24-hour clock, the time from midnight to midnight is 1 day (24 hours)ġ2 hours = midday = noon 12 hours = 1200 hoursĢ p.m. military, as well as critical info about how to join and all the benefits of service. Army didn't officially adopt military time until 1942.īe sure to get the latest news about the U.S. Navy began using the 24-hour clock in 1920, after becoming familiar with it during World War I. The 24-hour clock had already been employed throughout Europe for years before the U.S. It's also an authoritative source of time and a set of methods to disseminate synchronized time worldwide."Īlthough the phrase "military time" is commonly used, this time system was not invented by the military. "Military time, therefore, is more than a method for counting the hours. "Precise time is crucial to navigation, geographical positioning for locating forces and targets, and secure communications," according to the Encyclopedia of Military Science. ![]() ![]() ![]() Military routines and operations demand precision, and the use of the 24-clock system prevents any confusion over a.m. One of the main advantages of using military time is eliminating ambiguity. Read More: Military Lingo for New Military Spouses Military Time Chart 12-Hour Clock For example, for 2000 hours, subtract 12 from 20 to get 8 p.m. The day ends just before midnight at what civilians would call 11:59 p.m., but which in military time is 23:59, or twenty-three fifty-nine hours.įor those still learning the 24-clock system, a simple way to translate afternoon and evening hours into civilian time is to subtract 12. The military references to the afternoon and evening hours often take new enlistees in basic training longer to learn by heart.Īfter noon, instead of starting over with 1, military time continues chronologically, so that 1 p.m. This ease continues through midday, which is 1200 (twelve hundred) hours. The morning hours are simple enough to understand. in civilian time is written simply as 0630 in military time. In the four-digit expression of time, no colon separates the hours and minutes. ![]()
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