This 24-hour time standard is kept using highly precise atomic clocks combined with the Earth's rotation. In certain countries, 24-hour time is referred to as military time, since this is the time format used by militaries (and other entities) around the world, where unambiguous time measurement is particularly important. UTC The World's Time Standard By Anne Buckle and Vigdis Hocken Coordinated Universal Time (UTC) is the basis for civil time today. The hours from 0-11 denote what would be the AM hours on a 12-hour clock, while hours 12-23 denote the PM hours of a 12-hour clock. This time format is an international standard, and is often used to avoid the ambiguity resulting from the use of a 12-hour clock. Using the terms "12 midnight" and "12 noon" can remove ambiguity in cases where a person may not be accustomed to conventions.Ī 24-hour clock typically uses the numbers 0-23, where 00:00 indicates midnight, and a day runs from midnight to midnight over the course of 24 hours. One of the zones belong to Greenwich Mean Time (GMT) which during the winter it is the same time zone as London. On digital clocks and watches, "AM" stands for ante meridiem, meaning "before midday," while "PM" stands for post meridiem, or "after noon." By convention, 12 AM denotes midnight, while 12 PM denotes noon. Depending on the clock being used, most analog clocks or watches may not include an indication of whether the time is in the morning or evening. Most people read time using either a 12-hour clock or a 24-hour clock.Ī 12-hour clock uses the numbers 1-12. Clock Accuracy: ☐.5 seconds in 24 hours, ± 3 minutes per year Weight: 5.0 oz (0.3 lbs) Modes: Local Time, UTC / Zulu Time, Flight Timer, Countdown Timer, Stopwatch Operating Temp: -40✬ to 70✬ (-40✯ to 158✯) Altitude: 55,000 feet Mounting: Rear-panel mounted, (4) 6 screws Dimensions: 2.39 x 2.39 x 1. Related Time Card Calculator | Time CalculatorĪn hour is most commonly defined as a period of time equal to 60 minutes, where a minute is equal to 60 seconds, and a second has a rigorous scientific definition. Local Time display is switch selectable between 12 or 24 hour clock formats. Set short time to H:mm, and long time to h:mm:ss tt and that will give your display clock in the task bar 12 hour time and all the mouse hover clocks you add (local, UTC, Pacific, oceanic, etc) will be displayed in 24hour time giving you both formats at a mouse pass. Find out current local time in any time zone of the world with our world clock.
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