World Timezones

NST to IRST Converter

Compare IRST to NST instead
Newfoundland Time2:05 amFri, Jun 5
Newfoundland TimeNDT
North America · UTC-2:30
2:05 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
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a
4a
5a

Offset

The time difference between Newfoundland Time and Iran Standard Time is 6 hours.

6 hours

Newfoundland Time (NDT) is behind Iran Standard Time (IRST).

NDT: UTC-2:30

IRST: UTC+3:30

Newfoundland Time is currently observing daylight saving time; Iran Standard Time is not.

When to schedule

Business-hours overlap: 9 AM–11 AM in Newfoundland Time (3 PM–5 PM in Iran Standard Time).

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

Suggested time: 10:00 AM Newfoundland Time (4:00 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.

Canada

  • New Year's DayThu, Jan 1
  • Good FridayFri, Apr 3
  • Victoria DayMon, May 18
  • Canada DayWed, Jul 1
  • Labour DayMon, Sep 7
  • National Day for Truth and ReconciliationWed, Sep 30
  • ThanksgivingMon, Oct 12
  • Christmas DayFri, Dec 25

About these zones

Newfoundland Time is also known as NST, or NDT. To call Canada, dial +1.

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

Iran Standard Time is approximately 5,000 miles northeast of Newfoundland Time.

Quick reference

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

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

Daylight saving time

Newfoundland Time observes daylight saving time; Iran Standard Time does not. The offset between the two zones changes when Newfoundland Time transitions: on Sunday, November 1, 2026, clocks fall back from NDT to NST.

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

Daylight today

Newfoundland Time
Sunrise
5:06 AM
Sunset
8:54 PM
Day length
15h 48m
Iran Standard Time
Sunrise
4:50 AM
Sunset
7:18 PM
Day length
14h 28m

Daylight overlap: 8h 12m — 5:06 AM–1:18 PM in Newfoundland Time (11:06 AM–7:18 PM in Iran Standard Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Iran Standard 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

Related conversions

Common conversions

What is 9:00 am NST in IRST?
9:00 am NST is 3:00 pm IRST.
What is 12:00 pm NST in IRST?
12:00 pm NST is 6:00 pm IRST.
What is 12:30 pm NST in IRST?
12:30 pm NST is 6:30 pm IRST.
What is 2:00 pm NST in IRST?
2:00 pm NST is 8:00 pm IRST.
What is 5:00 pm NST in IRST?
5:00 pm NST is 11:00 pm IRST.
What is 11:30 pm NST in IRST?
11:30 pm NST is 5:30 am IRST, the next day.