Travelers traveling to Cuba will not be easy to adjust to changing time zones . This island state lives on Eastern time (for its designation it is customary to use the abbreviation EST), which also referred to as the North American East . From the world time (the famous UTC or GMT), which has changed the Greenwich Mean Time, it lags behind by 5 hours . For comparison: Moscow time is 4 hours ahead of the world time . So the difference is 9 hours . To all other things, to Ku ba still uses daylight saving time, which is effective from March 11 to November 4 . And it turns out that since November 4 the whole country is moving, in fact, to the Atlantic time, and this is UTC-4 and the difference with Moscow will be 8 hours .