Offset
The time difference between Tehran and New York is 7.5 hours.
Tehran (IRST) is ahead of New York (EDT).
IRST: UTC+3:30
EDT: UTC-4
New York is currently observing daylight saving time; Tehran is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Tehran and New York don't overlap on the same weekday. New York is 7 hours behind Tehran.
With some flexibility, there’s a workable window outside standard hours:
- 3 PM–8 PM in Tehran (7 AM–12 PM in New York) — suggest 5:00 PM Tehran (9:30 AM New York).
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.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Tehran | New York | 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
New York observes daylight saving time; Tehran does not. The offset between the two zones changes when New York transitions: on Sunday, November 1, 2026, clocks fall back from EDT to EST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:49 AM
- Sunset
- 7:19 PM
- Day length
- 14h 30m
- Sunrise
- 5:26 AM
- Sunset
- 8:26 PM
- Day length
- 15h
Cities in these zones
Other cities in Eastern 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 Eastern Time
- EWR
- HPN
- JFK
- LGA
- TEB
- ILG
- PHL
- TTN
- CLT
- USA
Related conversions
Common conversions
- What is 9:00 am Tehran in New York?
- 9:00 am Tehran is 1:30 am New York.
- What is 12:00 pm Tehran in New York?
- 12:00 pm Tehran is 4:30 am New York.
- What is 12:30 pm Tehran in New York?
- 12:30 pm Tehran is 5:00 am New York.
- What is 2:00 pm Tehran in New York?
- 2:00 pm Tehran is 6:30 am New York.
- What is 5:00 pm Tehran in New York?
- 5:00 pm Tehran is 9:30 am New York.
- What is 11:30 pm Tehran in New York?
- 11:30 pm Tehran is 4:00 pm New York.