World Timezones

CST-CUBA to AST Converter

Compare AST to CST-CUBA instead
Cuba Standard Time12:35 amFri, Jun 5
Cuba Standard TimeCDT
North America · UTC-4
12:35 amFri, Jun 5
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
Arabia Standard TimeAST
Middle East · UTC+3
7:35 amFri, Jun 5
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a
4a
5a
6a

Offset

The time difference between Cuba Standard Time and Arabia Standard Time is 7 hours.

7 hours

Cuba Standard Time (CDT) is behind Arabia Standard Time (AST).

CDT: UTC-4

AST: UTC+3

Cuba Standard Time is currently observing daylight saving time; Arabia Standard Time is not.

When to schedule

Business-hours overlap: 9 AM–10 AM in Cuba Standard Time (4 PM–5 PM in Arabia Standard Time).

Both teams are in working hours during this window on weekdays.

Suggested time: 9:00 AM Cuba Standard Time (4:00 PM Arabia Standard Time).

This window may shift by an hour during daylight saving time.

Note: the working week in Saudi Arabia runs Sunday–Thursday; Friday–Saturday is the weekend, so overlap on those days is limited.

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

About these zones

Cuba Standard Time is also known as CST, or CDT. To call Cuba, dial +53.

Arabia Standard Time is also known as AST. To call Saudi Arabia, dial +966.

Arabia Standard Time is approximately 7,700 miles northeast of Cuba Standard Time.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

CST-CUBAASTDay
12:00 am7:00 amSame day
1:00 am8:00 amSame day
2:00 am9:00 amSame day
3:00 am10:00 amSame day
4:00 am11:00 amSame day
5:00 am12:00 pmSame day
6:00 am1:00 pmSame day
7:00 am2:00 pmSame day
8:00 am3:00 pmSame day
9:00 am4:00 pmSame day
10:00 am5:00 pmSame day
11:00 am6:00 pmSame day
12:00 pm7:00 pmSame day
1:00 pm8:00 pmSame day
2:00 pm9:00 pmSame day
3:00 pm10:00 pmSame day
4:00 pm11:00 pmSame day
5:00 pm12:00 am+1 day
6:00 pm1:00 am+1 day
7:00 pm2:00 am+1 day
8:00 pm3:00 am+1 day
9:00 pm4:00 am+1 day
10:00 pm5:00 am+1 day
11:00 pm6:00 am+1 day

Daylight saving time

Cuba Standard Time observes daylight saving time; Arabia Standard 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

Cuba Standard Time
Sunrise
6:44 AM
Sunset
8:14 PM
Day length
13h 30m
Arabia Standard Time
Sunrise
5:05 AM
Sunset
6:41 PM
Day length
13h 36m

Daylight overlap: 4h 57m — 6:44 AM–11:41 AM in Cuba Standard Time (1:44 PM–6:41 PM in Arabia Standard Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Cuba Standard Time

Cities in Arabia Standard Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Cuba Standard Time

  • HAV

Airports in Arabia Standard Time

  • JED
  • RUH
  • MED
  • DMM

Related conversions

Common conversions

What is 9:00 am CST-CUBA in AST?
9:00 am CST-CUBA is 4:00 pm AST.
What is 12:00 pm CST-CUBA in AST?
12:00 pm CST-CUBA is 7:00 pm AST.
What is 12:30 pm CST-CUBA in AST?
12:30 pm CST-CUBA is 7:30 pm AST.
What is 2:00 pm CST-CUBA in AST?
2:00 pm CST-CUBA is 9:00 pm AST.
What is 5:00 pm CST-CUBA in AST?
5:00 pm CST-CUBA is 12:00 am AST, the next day.
What is 11:30 pm CST-CUBA in AST?
11:30 pm CST-CUBA is 6:30 am AST, the next day.