Offset
The time difference between Cuba Standard Time and Argentina Time is 1 hour.
Cuba Standard Time (CDT) is behind Argentina Time (ART).
CDT: UTC-4
ART: UTC-3
Cuba Standard Time is currently observing daylight saving time; Argentina Time is not.
When to schedule
Business-hours overlap: 9 AM–4 PM in Cuba Standard Time (10 AM–5 PM in Argentina Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 12:00 PM Cuba Standard Time (1:00 PM Argentina Time).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Cuba
- Triumph of the RevolutionThu, Jan 1
- Victory of Fidel CastroFri, Jan 2
- Good FridayFri, Apr 3
- Labour DayFri, May 1
- Day before the Commemoration of the Assault of the Moncada garrisonSat, Jul 25
- Commemoration of the Assault of the Moncada garrisonSun, Jul 26
- Day after the Commemoration of the Assault of the Moncada garrisonMon, Jul 27
- Independence DaySat, Oct 10
- Christmas DayFri, Dec 25
Argentina
- New Year's DayThu, Jan 1
- CarnivalMon, Feb 16
- CarnivalTue, Feb 17
- Day of Remembrance for Truth and JusticeTue, Mar 24
- Day of the Veterans and Fallen of the Malvinas WarThu, Apr 2
- Good FridayFri, Apr 3
- Labour DayFri, May 1
- May RevolutionMon, May 25
- Anniversary of the Passing of General Martín Miguel de GüemesMon, Jun 15
- General Manuel Belgrano Memorial DaySat, Jun 20
- Independence DayThu, Jul 9
- General José de San Martín Memorial DayMon, Aug 17
- Day of Respect for Cultural DiversityMon, Oct 12
- National Sovereignty DayMon, Nov 23
- Immaculate Conception DayTue, Dec 8
- Christmas DayFri, Dec 25
About these zones
Cuba Standard Time is also known as CST, or CDT. To call Cuba, dial +53.
Argentina Time is also known as ART. To call Argentina, dial +54.
Argentina Time is approximately 4,300 miles south of Cuba Standard Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| CST-CUBA | ART | Day |
|---|---|---|
| 12:00 am | 1:00 am | Same day |
| 1:00 am | 2:00 am | Same day |
| 2:00 am | 3:00 am | Same day |
| 3:00 am | 4:00 am | Same day |
| 4:00 am | 5:00 am | Same day |
| 5:00 am | 6:00 am | Same day |
| 6:00 am | 7:00 am | Same day |
| 7:00 am | 8:00 am | Same day |
| 8:00 am | 9:00 am | Same day |
| 9:00 am | 10:00 am | Same day |
| 10:00 am | 11:00 am | Same day |
| 11:00 am | 12:00 pm | Same day |
| 12:00 pm | 1:00 pm | Same day |
| 1:00 pm | 2:00 pm | Same day |
| 2:00 pm | 3:00 pm | Same day |
| 3:00 pm | 4:00 pm | Same day |
| 4:00 pm | 5:00 pm | Same day |
| 5:00 pm | 6:00 pm | Same day |
| 6:00 pm | 7:00 pm | Same day |
| 7:00 pm | 8:00 pm | Same day |
| 8:00 pm | 9:00 pm | Same day |
| 9:00 pm | 10:00 pm | Same day |
| 10:00 pm | 11:00 pm | Same day |
| 11:00 pm | 12:00 am | +1 day |
Daylight saving time
Cuba Standard Time observes daylight saving time; Argentina Time does not. The offset between the two zones changes when Cuba Standard Time transitions: on Sunday, November 1, 2026, clocks fall back from CDT to CST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:44 AM
- Sunset
- 8:14 PM
- Day length
- 13h 30m
- Sunrise
- 7:55 AM
- Sunset
- 5:51 PM
- Day length
- 9h 56m
Daylight overlap: 9h 56m — 6:55 AM–4:51 PM in Cuba Standard Time (7:55 AM–5:51 PM in Argentina Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Cuba Standard Time
Cities in Argentina Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Cuba Standard Time
- HAV
Airports in Argentina Time
- AEP
- EZE
Related conversions
Common conversions
- What is 9:00 am CST-CUBA in ART?
- 9:00 am CST-CUBA is 10:00 am ART.
- What is 12:00 pm CST-CUBA in ART?
- 12:00 pm CST-CUBA is 1:00 pm ART.
- What is 12:30 pm CST-CUBA in ART?
- 12:30 pm CST-CUBA is 1:30 pm ART.
- What is 2:00 pm CST-CUBA in ART?
- 2:00 pm CST-CUBA is 3:00 pm ART.
- What is 5:00 pm CST-CUBA in ART?
- 5:00 pm CST-CUBA is 6:00 pm ART.
- What is 11:30 pm CST-CUBA in ART?
- 11:30 pm CST-CUBA is 12:30 am ART, the next day.