GMT

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Greenwich, England has been the home of Greenwich Mean Time (GMT) since 1884.  GMT is sometimes called Greenwich Meridian Time because it is measured from the Greenwich Meridian Line at the Royal Observatory in Greenwich.  Greenwich is the place from where all time zones are measured.

The Greenwich Meridian (Prime Meridian or Longitude Zero degrees) marks the starting point of every time zone in the World.  GMT is Greenwich Mean (or Meridian) Time is the mean (average) time that the earth takes to rotate from noon-to-noon.

GMT is World Time and the basis of every world time zone which sets the time of day and is at the centre of the time zone map.  GMT sets current time or official time around the globe.  Most time changes are measured by GMT.  Although GMT has been replaced by atomic time (UTC) it is still widely regarded as the correct time for every international time zone.


click here to check ur GMT time zone

example. Mexico is at -5 GMT, if tourney will be played at 20 GMT
all u have to do is to add/substract ur Country GMT from the according GMT
20 - 5 = 15
The tourny will be played at 15:00 or 3 pm in Mexico

Any question, plz ask me or dirty