New York to Tehran
+7h 30mNew York
EDTSOURCETehran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
EDT and IRST on the World Map
The map below highlights the EDT (Eastern Standard Time) and IRST (Iran Standard Time) timezone regions across the globe.
EST – Eastern Standard Time
UTC-05:00Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.
- •EST is the most widely used time zone in the United States by population.
- •The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
- •23 US states are fully or partially in the Eastern Time Zone.
- •EST was established by the Standard Time Act of 1918.
- •Over 47% of the US population lives in the Eastern Time Zone.
IRST – Iran Standard Time
UTC+03:30Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.
- •IRST is one of only a few time zones with a 30-minute offset.
- •Iran observes daylight saving time, switching to IRDT (UTC+04:30).
- •Tehran has a metropolitan population of over 16 million.
About New York
WikipediaNew York City, the financial capital of the world, operates on Eastern Time (EST/EDT). Home to Wall Street and the NYSE, NYC is crucial for global business coordination.
New York City has more than 800 languages spoken, making it the most linguistically diverse city in the world.
About Tehran
WikipediaTehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).
New York vs Tehran: Offsets, DST and Best Call Times
New York runs on Eastern Daylight Time (EDT) at UTC-04:00, currently observing daylight saving time. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts New York 7 hours 30 minutes ahead of Tehran — a difference of +7h 30m at the current offsets.
In practice, when it is 9:00 AM in New York it is 4:30 PM in Tehran. Midnight in New York is 7:30 AM in Tehran.New York observes daylight saving time while Tehran does not, so the gap narrows or widens by an hour part of the year.
New York to Tehran time conversion table
| New York (EDT) | Tehran (IRST) | Day |
|---|---|---|
| 12:00 AM | 7:30 AM | same day |
| 6:00 AM | 1:30 PM | same day |
| 7:00 AM | 2:30 PM | same day |
| 8:00 AM | 3:30 PM | same day |
| 9:00 AM | 4:30 PM | same day |
| 12:00 PM | 7:30 PM | same day |
| 3:00 PM | 10:30 PM | same day |
| 5:00 PM | 12:30 AM | next day |
| 6:00 PM | 1:30 AM | next day |
| 9:00 PM | 4:30 AM | next day |
Why people convert New York to Tehran time
- Scheduling a call from New York to Tehran: a 10:00 AM start in New York lands at 5:30 PM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both New York and Tehran are inside the 9-to-5 working day between 9:00 AM and 9:30 AM EDT time (4:30 PM–5:00 PM IRST). That is roughly 0 hours 30 minutes of usable overlap.
- Watching a live event or market open: New York viewers need 4:30 PM in Tehran to catch a 9:00 AM start there, and 4:30 PM if the event is anchored to New York.
- Always state the zone abbreviation, not just the hour. "3:00 PM EDT" is unambiguous; "3 PM" across a +7h 30m gap is not.
- Block 9:00 AM–9:30 AM EDT as the recurring meeting window if you work primarily from New York and need Tehran colleagues present.
- New York: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +7h 30m gap.
About EST (Eastern Standard Time)
Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.
About IRST (Iran Standard Time)
Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.
Best time to call between New York and Tehran
Both New York and Tehran sit inside the 9 AM – 5 PM working day between 9:00 AM–9:30 AM EDT, which is 4:30 PM–5:00 PM IRST. That gives roughly 0 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
New York and Tehran overlap for only 30 minutes (9:00 AM–9:30 AM EDT), so meetings have to be booked precisely.
New York is 7 hours 30 minutes ahead of Tehran (EDT UTC-04:00 → IRST UTC+03:30). The shared working window is 9:00 AM–9:30 AM EDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
New York
☀ Currently in DST
Standard: UTC-05:00 · DST: UTC-04:00
Clocks fall back on Sun, Nov 1, 2026
Tehran
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between New York and Tehran?
New York (EDT, UTC-04:00) is 7 hours 30 minutes ahead of Tehran (IRST, UTC+03:30). The gap is currently +7h 30m.
How do I convert New York time to Tehran time?
Add +7h 30m to New York local time. For example, 9:00 AM in New York is 4:30 PM in Tehran.
What time is it in Tehran right now?
Tehran uses IRST at UTC+03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +7h 30m offset from New York.
What is the best time to call Tehran from New York?
Call between 9:00 AM and 9:30 AM EDT — that maps to 4:30 PM–5:00 PM IRST and keeps both parties inside the working day.
Which is ahead, New York or Tehran?
New York is 7 hours 30 minutes ahead of Tehran. When it is 12:00 PM in New York it is 7:30 PM in Tehran.
Do New York and Tehran use different time zones?
New York (USA) uses EDT at UTC-04:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are America/New_York and Asia/Tehran.
Does daylight saving time affect the New York–Tehran difference?
Yes at the moment: New York is on daylight saving time and Tehran is not, so the +7h 30m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share New York's time zone?
EDT also covers New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal and 8 more.
Which countries use EDT, New York's zone?
EDT is used in United States (Eastern), Canada (Ontario, Quebec), Mexico (Quintana Roo), Panama, Jamaica, Cayman Islands, Haiti, Bahamas and 4 more.
Is there a day difference between New York and Tehran?
Not normally. The +7h 30m gap only pushes the date over for late-evening times.
What is the time difference between New York and Tehran?
Tehran is +7h 30m from New York.
What timezone is New York in?
New York City, the financial capital of the world, operates on Eastern Time (EST/EDT). Home to Wall Street and the NYSE, NYC is crucial for global business coordination.
What timezone is Tehran in?
Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
What are the business hours in New York?
Standard business hours in New York are 9:00 AM - 5:00 PM EST.
What are the business hours in Tehran?
Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.
What is the best time to schedule a call between New York and Tehran?
The best overlap for a call is when both cities are in business hours. New York works 9:00 AM - 5:00 PM EST and Tehran works 8:00 AM - 4:00 PM IRST (+7h 30m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in New York and Tehran?
New York uses USD ($) while Tehran uses IRR (﷼). Check current exchange rates when planning travel or business between these cities.
How do New York and Tehran compare in size?
New York has a population of approximately 8.3 million (metro: 20.1 million), while Tehran has approximately 9.4 million (metro: 16.8 million).
What are the major landmarks in New York and Tehran?
New York is known for Statue of Liberty, Empire State Building, Times Square. Tehran is famous for Azadi Tower, Golestan Palace, Grand Bazaar.
Do New York and Tehran have stock exchanges?
Yes. New York has the NYSE (New York Stock Exchange) and Tehran has the TSE (Tehran Stock Exchange). The +7h 30m time difference affects trading hour overlaps between these exchanges.
Which countries use EST (Eastern Standard Time)?
EST is used in United States (Eastern), Canada (Ontario, Quebec), Mexico (Quintana Roo), Panama, Jamaica, Cayman Islands, and 6 more countries.
Does EST observe daylight saving time?
Yes, EST switches to EDT during summer months.
What are some interesting facts about EST?
EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
Which cities are in the IRST timezone?
Major cities in the IRST timezone include Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
What is the UTC offset for IRST?
Iran Standard Time (IRST) is at UTC+03:30. During daylight saving time, it shifts to IRDT.
What should I know about the IRST timezone?
IRST is one of only a few time zones with a 30-minute offset. Iran observes daylight saving time, switching to IRDT (UTC+04:30).
When is it midnight in New York, what time is it in Tehran?
When it is 12:00 AM (midnight) in New York (EST), it is +7h 30m later in Tehran (IRST).
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