In the case of a leap second, the value of ss may extend to 60. Description 24-hour clockġ2-hour 24-hour digital clock in Miaoli HSR station.Ī time of day is written in the 24-hour notation in the form hh:mm (for example 01:23) or hh:mm:ss (for example, 01:23:45), where hh (00 to 23) is the number of full hours that have passed since midnight, mm (00 to 59) is the number of full minutes that have passed since the last full hour, and ss (00 to 59) is the number of seconds since the last full minute. For example, in the practice of medicine, the 24-hour clock is generally used in documentation of care as it prevents any ambiguity as to when events occurred in a patient's medical history. In countries where the 12-hour clock is dominant, some professions prefer to use the 24-hour clock. Ī number of countries, particularly English speaking, use the 12-hour clock, or a mixture of the 24- and 12-hour time systems. This system, as opposed to the 12-hour clock, is the most commonly used time notation in the world today, and is used by the international standard ISO 8601. This is indicated by the hours (and minutes) passed since midnight, from 0(:00) to 23(:59). The modern 24-hour clock is the convention of timekeeping in which the day runs from midnight to midnight and is divided into 24 hours. That way, 20:00 becomes 8pm (time for dinner in Italy).A public 24 hour clock in Curitiba, Brazil with the hour hand displayed on the outside and the minute hand shown on the inside. Just remember: If the hour is greater that 12, subtract 12 and add a "pm" in your head. When speaking, however, Europeans might use either the 24-hour-clock number, or a 12-hour-clock number followed by the phrase (in local lingo) "in the afternoon"-so at 3pm, they may say "it's fifteen o'clock" (or, more usually, just "it's fifteen") or they might say "it's three in the afternoon." The day ends at 24:00 (that's midnight), after which there's a wee hour when the minutes tick off 0:01, 0:02, 0:03. Dinner may take place any time from 17:00 (Britain's 5pm repast) to 22:30 (Spain's 10:30pm feast). At noon they write 12:00, and when it gets to be 1pm they write 13:00, and then go take a nap (you gotta love riposo/siesta). They just refer to the morning hours like we do-9:00, 10:00, 11:43, etc. Most Europeans use the 24-hour clock-known to us Yanks as "military time," though you'll never hear an Italian bark out a phrase like "at oh-six-hundred hours," not even in Italian (and not just because few Italians are silly enough to be awake at that ungodly hour). Also, the Cutty Sark is moored at the riverside and there are some bloody good pubs, including one hanging over the Thames). Greenwich, England-formerly a village which is now part of Greater London-is the world's official arbiter of what time it is, set by an atomic clock (you can take the Tube there-Jubilee line-and set your watch by the big digital display, which is placed right over a funny line drawn down the middle of the planet officially separating the East and West hemispheres. The British Isles (including Ireland), Portugal, and Iceland are all five hours ahead of EST (one hour behind the rest of Western Europe) and are all on GMT (Greenwich Mean Time). Greece, much of Eastern Europe (Turkey, Romania, Bulgaria) and Finland are all seven hours ahead. That means when it's 1pm in New York and 10am in San Francisco, it's 7pm in Paris. Most of Western Europe is six hours ahead of Eastern Standard Time (or one hour ahead of GMT, Greenwich Mean Time). What time is it in Europe? Time zones in Europe and dealing with the 24-hour clock
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