Current World Time

Shows the current world time UTC, current timestamp in microseconds and the hours, minutes and secods passed so far today. The coordinated universal time, UTC, is the standard time for the world, independant of time zones. It is used as a global reference time. Hours today tells how many decimal hours have passed so far, the same for decimal minutes and seconds.

The world time UTC, Universal Time Coordinated, is based upon the Greenwich Mean Time (GMT). It knows no daylight saving or other clock change.

Although it has long been known, at least since the ancient Greeks, that the sun appears to be in different positions in the sky in different parts of the world, thus having different times, the first time zone was not established until 1767 at the Royal Observatory in Greenwich. This was declared Universal Coordinated Universal Time in 1884. The other time zones are aligned with this by adding or subtracting precise time periods, usually whole or half hours. In Germany for example, this is Central European Time (CET) with UTC+1 hour, so if it is 1 p.m. after UTC, it is 2 p.m. in Germany. During daylight saving time (CEST), it is UTC+2 hours, so it would then be 3 p.m. Time periods are added for time zones further east and subtracted for those further west, although this is a general trend and not always exact, as each country is free to choose its own time zone as it sees fit. Large countries usually have multiple time zones. The exception is China, which has only one time zone, even though because of its size it should actually have five.
Hours, minutes and seconds today for a time zone other than UTC can be easily calculated by adding 1, 60 or 3600 per UTC+1, or by subtracting them accordingly per UTS-1.