World Timezones

COT to AST Converter

Compare AST to COT instead
Colombia Time11:35 pmThu, Jun 4
Colombia TimeCOT
South America · UTC-5
11:35 pmThu, Jun 4
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
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a
4a
5a
6a
7a

Offset

The time difference between Colombia Time and Arabia Standard Time is 8 hours.

8 hours

Colombia Time (COT) is behind Arabia Standard Time (AST).

COT: UTC-5

AST: UTC+3

Neither Colombia Time nor Arabia Standard Time is currently observing daylight saving time.

When to schedule

Standard business hours (9 AM–5 PM, Mon–Fri) in Colombia Time and Arabia Standard Time don't overlap on the same weekday. Arabia Standard Time is 8 hours ahead of Colombia Time.

With some flexibility, there’s a workable window outside standard hours:

  • 7 AM–12 PM in Colombia Time (3 PM–8 PM in Arabia Standard Time) — suggest 9:00 AM Colombia Time (5:00 PM Arabia Standard Time).

This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.

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.

Colombia

  • New Year's DayThu, Jan 1
  • EpiphanyMon, Jan 12
  • Saint Joseph's DayMon, Mar 23
  • Maundy ThursdayThu, Apr 2
  • Good FridayFri, Apr 3
  • Labour DayFri, May 1
  • Ascension DayMon, May 18
  • Corpus ChristiMon, Jun 8
  • Sacred HeartMon, Jun 15
  • Saint Peter and Saint PaulMon, Jun 29
  • Declaration of IndependenceMon, Jul 20
  • Battle of BoyacáFri, Aug 7
  • Assumption of MaryMon, Aug 17
  • Columbus DayMon, Oct 12
  • All Saints’ DayMon, Nov 2
  • Independence of CartagenaMon, Nov 16
  • Immaculate ConceptionTue, Dec 8
  • Christmas DayFri, Dec 25

About these zones

Colombia Time is also known as COT. To call Colombia, dial +57.

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

Arabia Standard Time is approximately 7,950 miles northeast of Colombia Time.

Quick reference

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

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

Daylight saving time

Neither Colombia Time nor Arabia Standard Time observes daylight saving time. The offset between these zones remains constant year-round.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Colombia Time
Sunrise
5:44 AM
Sunset
6:07 PM
Day length
12h 23m
Arabia Standard Time
Sunrise
5:05 AM
Sunset
6:41 PM
Day length
13h 36m

Cities in these zones

Cities in Colombia Time

Cities in Arabia Standard Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Colombia Time

  • BOG
  • CLO
  • EOH
  • MDE

Airports in Arabia Standard Time

  • JED
  • RUH
  • MED
  • DMM

Related conversions

Common conversions

What is 9:00 am COT in AST?
9:00 am COT is 5:00 pm AST.
What is 12:00 pm COT in AST?
12:00 pm COT is 8:00 pm AST.
What is 12:30 pm COT in AST?
12:30 pm COT is 8:30 pm AST.
What is 2:00 pm COT in AST?
2:00 pm COT is 10:00 pm AST.
What is 5:00 pm COT in AST?
5:00 pm COT is 1:00 am AST, the next day.
What is 11:30 pm COT in AST?
11:30 pm COT is 7:30 am AST, the next day.