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The geographically correct position is about 100 meters further east. World Time Buddy (WTB) is a convenient world clock, a time zone converter, and an online meeting scheduler. In the courtyard of the historic Royal Greenwich Observatory, a brass strip and a laser beam symbolize the zero meridian. Previously, numerous coordinate systems competed with each other. Only with this worldwide uniform regulation did the coordinates we know today exist. GMT+1 does not change between summer time and winter time. When the date line was established in a preferably uninhabited area between Asia and America, the zero meridian was established on the opposite side of the globe in Greenwich. GMT+1 is 6 hours ahead of the time in New York when New York is on standard time, and 5 hours ahead of the time in New York when New York is on daylight saving time. Each section of 15° corresponded to one hour, which, at least in theory, resulted in 24 uniform time zones. Find out the exact current GMT time and the locations that use Greenwich Mean Time as their standard time. It was not until 1884 that a globally uniform time system was agreed upon, dividing the globe into 24 equal-sized areas according to their longitudes. One of the best known was already based on the Greenwich meridian. Origin of the Greenwich Mean Time During seafaring times, there were different zero meridians and systems for position calculation depending on the nation. Saint Helena, Ascension and Tristan da Cunha Your clock is 258590.631 seconds ahead The difference from whattime.is was +258590.631 seconds. GMT to UTC Converter - Convert Greenwich Time to Universal Time - World Time Buddy.