Time zone · Americas
CDT
Cuba Daylight Time
Cuba Daylight Time (CDT) is the UTC-04:00 offset used in Havana and across Cuba during daylight saving, giving the island a bright, forward-shifted rhythm that stretches evenings with extra sunlight and aligns loosely with parts of the U.S. Eastern seaboard’s summer schedule. When clocks fall back, Cuba returns to UTC-05:00, marking the end of its annual dance with daylight saving.
Saturday, May 30, 2026
Current offset
UTC-04:00
Daylight · CDT
Daylight saving
Active
Reverts 1 Nov 2026
IANA zones
1
1 observe DST, 0 don't
DST offset
—
No summer variant
About CDT
Standard time, with a summer shift.
Cuba Daylight Time (CDT) is the UTC-04:00 offset used in Havana and across Cuba during daylight saving, giving the island a bright, forward-shifted rhythm that stretches evenings with extra sunlight and aligns loosely with parts of the U.S. Eastern seaboard’s summer schedule. When clocks fall back, Cuba returns to UTC-05:00, marking the end of its annual dance with daylight saving.
IANA zones · the technical identifiers
The zone that resolve to CDT.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Cities currently on CDT
The same hour, city by city.
1 city · all UTC-04:00
Where CDT is used
One country.
Same offset · UTC-04:00
Other zones at UTC-04:00 right now.
These named zones share CDT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Frequently asked questions
Common questions about CDT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- When does Cuba Daylight Time start and end?
- Cuba Daylight Time typically begins in March and ends in November, following a schedule similar to U.S. Eastern Daylight Time, though exact dates can shift year to year.
- Is Cuba Daylight Time the same as U.S. Eastern Daylight Time?
- While both share the UTC-04:00 offset during DST, Cuba’s start and end dates for daylight saving don’t always perfectly match U.S. Eastern Time due to local government decisions.
- Which time zone code covers Cuba?
- Cuba Daylight Time (CDT) is the only time zone code for Cuba, centered on Havana, and it’s the island’s summer time offset.
- What is the standard time in Cuba?
- Outside of DST, Cuba reverts to UTC-05:00, which is its standard time, aligning with the Caribbean’s more typical offset.
- How does daylight saving affect daily life in Cuba?
- The shift to UTC-04:00 pushes clocks forward, giving more daylight in the evening, which can influence social and business hours across the island.
- Are there multiple time zones in Cuba?
- No, Cuba uses only one time zone code, centered on Havana, simplifying coordination across the country.
- What is the current time in Cuba?
- You can check the current time in Havana to see Cuba Daylight Time in action, with its UTC-04:00 offset during DST.
- How does Cuba’s daylight saving compare to other Caribbean islands?
- Cuba is one of the few Caribbean islands that observes daylight saving, making its time zone unique in the region.
Free · Developer API
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