Cuba uses Cuba Standard Time (CST), which is UTC-5 during standard time, and Cuba Daylight Time (CDT), which is UTC-4 during daylight saving time.

Cuba observes Daylight Saving Time. The clocks move forward 1 hour to Cuba Daylight Time (CDT, UTC-4) in March and move back 1 hour to Cuba Standard Time (CST, UTC-5) in November.

The time difference between Cuba and the United States varies depending on the U.S. time zone. During standard time, Cuba is on the same time as Eastern Standard Time (EST, UTC-5). During daylight saving time, Cuba is on the same time as Eastern Daylight Time (EDT, UTC-4).

Yes, several countries and territories in the Caribbean and the Americas share Cuba’s time zone, particularly during Daylight Saving Time, such as the Bahamas and parts of Canada and the U.S. Eastern Time Zone.