Time Zones in Cuba
Cuba is in the GMT-5 zone. During daylight saving in the summer that means that the time difference will be decreased to GMT-4.
Electricity in Cuba is 110/230 volts AC, 60Hz. An American-style flat two-prong adaptor is generally used, but in some of the larger hotels, a European-style round two-pin plug will be used instead. Don’t ask us why!