Time in IRST and COST
The time difference between Iran Standard Time (IRST) and Colombia Summer Time (COST) is 7 hours 30 minutes. Colombia Summer Time is 7 hours 30 minutes behind Iran Standard Time.
This means 9am IRST is 1:30am COST and 5pm IRST is 9:30am COST.
Iran Standard Time
- The current local time in IRST is 2:14 am (July 19, 2026)
- IRST time zone offset is UTC+03:30
Colombia Summer Time
- The current local time in COST is 2:44 am (July 19, 2026)
- COST time zone offset is UTC-04:00
How to convert Iran Standard Time to Colombia Summer Time?
Subtract 7 hours 30 minutes from Iran Standard Time to get Colombia Summer Time.
Time in IRST
00:00
Time in COST
00:00
Use the slider above to convert Iran Standard Time to Colombia Summer Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| IRST | COST |
|---|---|
| 12am | 4:30pm |
| 1am | 5:30pm |
| 2am | 6:30pm |
| 3am | 7:30pm |
| 4am | 8:30pm |
| 5am | 9:30pm |
| 6am | 10:30pm |
| 7am | 11:30pm |
| 8am | 0:30am |
| 9am | 1:30am |
| 10am | 2:30am |
| 11am | 3:30am |
| 12pm | 4:30am |
| 1pm | 5:30am |
| 2pm | 6:30am |
| 3pm | 7:30am |
| 4pm | 8:30am |
| 5pm | 9:30am |
| 6pm | 10:30am |
| 7pm | 11:30am |
| 8pm | 12:30pm |
| 9pm | 1:30pm |
| 10pm | 2:30pm |
| 11pm | 3:30pm |