For the Christian metal album, see Veni Domine.
In some contexts (including some computer protocols), no separator is used and times are written as, for example, "2359". In the past, some European countries used the dot on the line as a separator, but most national standards on time notation have since then been changed to the international standard colon.
24 HOUR ATOMIC ANALOG UTC CLOCK ISO
The most commonly used separator symbol between hours, minutes and seconds is the colon, which is also the symbol used in ISO 8601. Where subsecond resolution is required, the seconds can be a decimal fraction that is, the fractional part follows a decimal dot or comma, as in 01:23:45.678. The leading zero is very commonly used in computer applications, and always used when a specification requires it (for example, ISO 8601). A leading zero is added for numbers under 10, but it is optional for the hours. In the case of a leap second, the value of ss may extend to 60.
24 HOUR ATOMIC ANALOG UTC CLOCK FULL
24-hour clockĢ4-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, popularly referred to in the United States as military time, is the convention of timekeeping in which the day runs from midnight to midnight and is divided into 24 hours.
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