Greek time is two hours ahead of Greenwich Mean Time, an hour ahead of Central European Time and seven hours ahead of Eastern Standard Time. Along with the rest of continental Europe, the clock is advanced one hour during summer -from the end of March to the end of September- almost a month earlier than the UK, the US and Canada.
Therefore keep in mind that the time difference with these countries is one hour greater for some weeks in April and October.

Whenever you wish to find out what is the exact time while in Greece call the tool free number 14844 or simply contact any of the hotel staff.