![]() ![]() Neither timekeeping method is perfect however, and one of the potential sources of confusion that both methods are susceptible to occurs at midnight (00:00 or 24:00 in the 24-hour click and 12:00 AM in the 12-hour clock). None of the hours in the 24-hour clock repeat, so there is no risk of confusion. The main benefit of using the 24-hour clock system is the lack of ambiguity, since the 12-hour clock requires the specification of AM and PM, and can sometimes lead to confusion if the speaker (or writer) does not specify whether a given time occurs before or after noon. The rest of the world says 19:00 or 1900 instead of 7 pm-be it to plan military operations or tell each other when dinner is ready.Note that midnight in the 24-hour clock can also be written as 24:00. The military is an obvious example, but hospitals and emergency services also use the 24-hour timekeeping system.īroadly speaking, it’s mainly the English-speaking countries that use AM and PM to express the time of day. Military time, with its special notation and syntax, is usually only used in certain contexts. Of course, what they’re really doing is using the 24-hour clock, the world’s most widely used time format. That distinction may hold water in the US, but don’t be surprised to see people (civilians, no less) in other countries using “military time” in their everyday life! If you travel to mainland Europe, your train may depart at 15:57 and the TV news may start at 21:00. (Some also use the term standard time, but that can be confusing since that can also denote the opposite of Daylight Saving Time.) If you grew up in the United States, you may think of the 24-hour clock as military time and the 12-hour clock as regular time or civilian time. Train station in Amsterdam, Netherlands: the train to Den Helder leaves at three minutes to four (15:57).
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