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The World Clock - Time Zones (137 words) |
 | UTC is Coordinated Universal Time, GMT is Greenwich Mean Time. |
 | Time Zone Converter - Convert time between two time zones. |
 | Fixed time clock - convert between many time zones - in past or future |
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International standard date and time notation (2932 words) |
 | A single leap second 23:59:60 is inserted into the UTC time scale every few years as announced by the International Earth Rotation Service in Paris, to keep UTC from wandering away more than 0.9 s from the less constant astronomical time scale UT1, which is defined by the actual rotation of the earth. |
 | In case an unambiguous representation of time is required, 00:00 is usually the preferred notation for midnight and not 24:00. |
 | Please consider the 12h time to be a relic from the dark ages when Roman numerals were used, the number zero had not yet been invented and analog clocks were the only known form of displaying a time. |