World Timezones

CLT to IRST Converter

Compare IRST to CLT instead
Chile Time12:35 amFri, Jun 5
Chile TimeCLT
South 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
Iran Standard TimeIRST
Middle East · UTC+3:30
8:05 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 Chile Time and Iran Standard Time is 7.5 hours.

7.5 hours

Chile Time (CLT) is behind Iran Standard Time (IRST).

CLT: UTC-4

IRST: UTC+3:30

Neither Chile Time nor Iran Standard Time is currently observing daylight saving time.

When to schedule

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

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

Suggested time: 9:00 AM Chile Time (4:30 PM Iran Standard Time).

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

Chile Time is also known as CLT, or CLST. To call Chile, dial +56.

Iran Standard Time is also known as IRST. To call Iran, dial +98.

Iran Standard Time is approximately 9,200 miles east of Chile Time.

Quick reference

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

CLTIRSTDay
12:00 am7:30 amSame day
1:00 am8:30 amSame day
2:00 am9:30 amSame day
3:00 am10:30 amSame day
4:00 am11:30 amSame day
5:00 am12:30 pmSame day
6:00 am1:30 pmSame day
7:00 am2:30 pmSame day
8:00 am3:30 pmSame day
9:00 am4:30 pmSame day
10:00 am5:30 pmSame day
11:00 am6:30 pmSame day
12:00 pm7:30 pmSame day
1:00 pm8:30 pmSame day
2:00 pm9:30 pmSame day
3:00 pm10:30 pmSame day
4:00 pm11:30 pmSame day
5:00 pm12:30 am+1 day
6:00 pm1:30 am+1 day
7:00 pm2:30 am+1 day
8:00 pm3:30 am+1 day
9:00 pm4:30 am+1 day
10:00 pm5:30 am+1 day
11:00 pm6:30 am+1 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

Chile Time
Sunrise
7:41 AM
Sunset
5:43 PM
Day length
10h 2m
Iran Standard Time
Sunrise
4:50 AM
Sunset
7:18 PM
Day length
14h 28m

Daylight overlap: 4h 6m — 7:41 AM–11:48 AM in Chile Time (3:11 PM–7:18 PM in Iran Standard Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Chile Time

Cities in Iran Standard Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Chile Time

  • SCL

Airports in Iran Standard Time

  • IKA
  • THR
  • MHD
  • IFN
  • PYK
  • TBZ

Related conversions

Common conversions

What is 9:00 am CLT in IRST?
9:00 am CLT is 4:30 pm IRST.
What is 12:00 pm CLT in IRST?
12:00 pm CLT is 7:30 pm IRST.
What is 12:30 pm CLT in IRST?
12:30 pm CLT is 8:00 pm IRST.
What is 2:00 pm CLT in IRST?
2:00 pm CLT is 9:30 pm IRST.
What is 5:00 pm CLT in IRST?
5:00 pm CLT is 12:30 am IRST, the next day.
What is 11:30 pm CLT in IRST?
11:30 pm CLT is 7:00 am IRST, the next day.