Offset
The time difference between Iran Standard Time and Chile Time is 7.5 hours.
Iran Standard Time (IRST) is ahead of Chile Time (CLT).
IRST: UTC+3:30
CLT: UTC-4
Neither Iran Standard Time nor Chile Time is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Iran Standard Time and Chile Time don't overlap on the same weekday. Chile Time is 7 hours behind Iran Standard Time.
With some flexibility, there’s a workable window outside standard hours:
- 3 PM–8 PM in Iran Standard Time (7 AM–12 PM in Chile Time) — suggest 5:00 PM Iran Standard Time (9:30 AM Chile Time).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
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.
Chile
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Holy SaturdaySat, Apr 4
- Labour DayFri, May 1
- Navy DayThu, May 21
- National Day of Indigenous PeoplesSun, Jun 21
- Saint Peter and Saint PaulMon, Jun 29
- Our Lady of Mount CarmelThu, Jul 16
- Assumption of MarySat, Aug 15
- National holidayFri, Sep 18
- Army DaySat, Sep 19
- Columbus DayMon, Oct 12
- Reformation DaySat, Oct 31
- All Saints DaySun, Nov 1
- Immaculate ConceptionTue, Dec 8
- Christmas DayFri, Dec 25
About these zones
Iran Standard Time is also known as IRST. To call Iran, dial +98.
Chile Time is also known as CLT, or CLST. To call Chile, dial +56.
Chile Time is approximately 9,200 miles west of Iran Standard Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| IRST | CLT | Day |
|---|---|---|
| 12:00 am | 4:30 pm | -1 day |
| 1:00 am | 5:30 pm | -1 day |
| 2:00 am | 6:30 pm | -1 day |
| 3:00 am | 7:30 pm | -1 day |
| 4:00 am | 8:30 pm | -1 day |
| 5:00 am | 9:30 pm | -1 day |
| 6:00 am | 10:30 pm | -1 day |
| 7:00 am | 11:30 pm | -1 day |
| 8:00 am | 12:30 am | Same day |
| 9:00 am | 1:30 am | Same day |
| 10:00 am | 2:30 am | Same day |
| 11:00 am | 3:30 am | Same day |
| 12:00 pm | 4:30 am | Same day |
| 1:00 pm | 5:30 am | Same day |
| 2:00 pm | 6:30 am | Same day |
| 3:00 pm | 7:30 am | Same day |
| 4:00 pm | 8:30 am | Same day |
| 5:00 pm | 9:30 am | Same day |
| 6:00 pm | 10:30 am | Same day |
| 7:00 pm | 11:30 am | Same day |
| 8:00 pm | 12:30 pm | Same day |
| 9:00 pm | 1:30 pm | Same day |
| 10:00 pm | 2:30 pm | Same day |
| 11:00 pm | 3:30 pm | Same day |
Daylight saving time
Chile Time observes daylight saving time; Iran Standard Time does not. The offset between the two zones changes when Chile Time transitions: on Sunday, September 6, 2026, clocks spring forward from CLT to CLST.
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
- 7:41 AM
- Sunset
- 5:43 PM
- Day length
- 10h 2m
Daylight overlap: 4h 6m — 3:11 PM–7:18 PM in Iran Standard Time (7:41 AM–11:48 AM in Chile Time). Both locations are in daylight during this window.
Cities in these zones
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 Chile Time
- SCL
Related conversions
Common conversions
- What is 9:00 am IRST in CLT?
- 9:00 am IRST is 1:30 am CLT.
- What is 12:00 pm IRST in CLT?
- 12:00 pm IRST is 4:30 am CLT.
- What is 12:30 pm IRST in CLT?
- 12:30 pm IRST is 5:00 am CLT.
- What is 2:00 pm IRST in CLT?
- 2:00 pm IRST is 6:30 am CLT.
- What is 5:00 pm IRST in CLT?
- 5:00 pm IRST is 9:30 am CLT.
- What is 11:30 pm IRST in CLT?
- 11:30 pm IRST is 4:00 pm CLT.