Offset
The time difference between Iran Standard Time and Colombia Time is 8.5 hours.
Iran Standard Time (IRST) is ahead of Colombia Time (COT).
IRST: UTC+3:30
COT: UTC-5
Neither Iran Standard Time nor Colombia Time is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Iran Standard Time and Colombia Time don't overlap on the same weekday. Colombia Time is 8 hours behind Iran Standard Time.
With some flexibility, there’s a workable window outside standard hours:
- 4 PM–8 PM in Iran Standard Time (7 AM–11 AM in Colombia Time) — suggest 6:00 PM Iran Standard Time (9:30 AM Colombia Time).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
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
Iran Standard Time is also known as IRST. To call Iran, dial +98.
Colombia Time is also known as COT. To call Colombia, dial +57.
Colombia Time is approximately 7,950 miles northwest of Iran Standard Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| IRST | COT | Day |
|---|---|---|
| 12:00 am | 3:30 pm | -1 day |
| 1:00 am | 4:30 pm | -1 day |
| 2:00 am | 5:30 pm | -1 day |
| 3:00 am | 6:30 pm | -1 day |
| 4:00 am | 7:30 pm | -1 day |
| 5:00 am | 8:30 pm | -1 day |
| 6:00 am | 9:30 pm | -1 day |
| 7:00 am | 10:30 pm | -1 day |
| 8:00 am | 11:30 pm | -1 day |
| 9:00 am | 12:30 am | Same day |
| 10:00 am | 1:30 am | Same day |
| 11:00 am | 2:30 am | Same day |
| 12:00 pm | 3:30 am | Same day |
| 1:00 pm | 4:30 am | Same day |
| 2:00 pm | 5:30 am | Same day |
| 3:00 pm | 6:30 am | Same day |
| 4:00 pm | 7:30 am | Same day |
| 5:00 pm | 8:30 am | Same day |
| 6:00 pm | 9:30 am | Same day |
| 7:00 pm | 10:30 am | Same day |
| 8:00 pm | 11:30 am | Same day |
| 9:00 pm | 12:30 pm | Same day |
| 10:00 pm | 1:30 pm | Same day |
| 11:00 pm | 2:30 pm | Same day |
Daylight saving time
Neither Iran Standard Time nor Colombia 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
- Sunrise
- 4:50 AM
- Sunset
- 7:18 PM
- Day length
- 14h 28m
- Sunrise
- 5:44 AM
- Sunset
- 6:07 PM
- Day length
- 12h 23m
Cities in these zones
Cities in Colombia Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Iran Standard Time
- IKA
- THR
- MHD
- IFN
- PYK
- TBZ
Airports in Colombia Time
- BOG
- CLO
- EOH
- MDE
Related conversions
Common conversions
- What is 9:00 am IRST in COT?
- 9:00 am IRST is 12:30 am COT.
- What is 12:00 pm IRST in COT?
- 12:00 pm IRST is 3:30 am COT.
- What is 12:30 pm IRST in COT?
- 12:30 pm IRST is 4:00 am COT.
- What is 2:00 pm IRST in COT?
- 2:00 pm IRST is 5:30 am COT.
- What is 5:00 pm IRST in COT?
- 5:00 pm IRST is 8:30 am COT.
- What is 11:30 pm IRST in COT?
- 11:30 pm IRST is 3:00 pm COT.