Convert Iran Standard Time to Eastern Standard Time
Instantly convert Iran Standard Time (IRST) to Eastern Standard Time (EST) with our free online calculator.
Iran Standard Time
08:50:59 AM
Wed, Jun 24 (IRST)
Eastern Standard Time
12:20:59 AM
Wed, Jun 24 (EST)
Convert a Specific Time
24-Hour Comparison
| IRST | EST |
|---|---|
| 12:00 AM | 3.5:00 PM(-1d) |
| 1:00 AM | 4.5:00 PM(-1d) |
| 2:00 AM | 5.5:00 PM(-1d) |
| 3:00 AM | 6.5:00 PM(-1d) |
| 4:00 AM | 7.5:00 PM(-1d) |
| 5:00 AM | 8.5:00 PM(-1d) |
| 6:00 AM | 9.5:00 PM(-1d) |
| 7:00 AM | 10.5:00 PM(-1d) |
| 8:00 AM | 11.5:00 PM(-1d) |
| 9:00 AM | 0.5:00 AM |
| 10:00 AM | 1.5:00 AM |
| 11:00 AM | 2.5:00 AM |
| 12:00 PM | 3.5:00 AM |
| 1:00 PM | 4.5:00 AM |
| 2:00 PM | 5.5:00 AM |
| 3:00 PM | 6.5:00 AM |
| 4:00 PM | 7.5:00 AM |
| 5:00 PM | 8.5:00 AM |
| 6:00 PM | 9.5:00 AM |
| 7:00 PM | 10.5:00 AM |
| 8:00 PM | 11.5:00 AM |
| 9:00 PM | 0.5:00 PM |
| 10:00 PM | 1.5:00 PM |
| 11:00 PM | 2.5:00 PM |
How to Convert Iran Standard Time to Eastern Standard Time
Formula
To convert Iran Standard Time (IRST) to Eastern Standard Time (EST): Convert IRST to EST
About Iran Standard Time (IRST)
Iran Standard Time (IRST, IANA: Asia/Tehran) is the civil time of the Islamic Republic of Iran, set at UTC+3:30 — one of the world's few 30-minute-offset time zones. IRST observes Daylight Saving Time (switching to IRDT = UTC+4:30) from the last Wednesday of the Iranian month of Farvardin (~March 22) to the last Wednesday of Shahrivar (~September 22) per Iranian government calendar (the country abolished DST in 2022 then partially reinstated it for energy savings — the schedule is subject to change by Iranian Parliament Majlis decree). The 30-minute offset is preserved because Iran's central meridian is approximately 52.5°E, between UTC+3 and UTC+4 standard zones, and the Iranian Solar Hijri calendar has its own astronomical traditions for time-keeping. IRST serves approximately 88 million Iranian people across 31 provinces. Major cities: Tehran (8.7M city, 13M metro — capital), Mashhad (3.1M), Isfahan (2.2M), Karaj (1.6M), Shiraz (1.6M), Tabriz (1.6M), Qom (1.2M). Other 30/45-minute offset zones: India (UTC+5:30), Nepal (UTC+5:45), Myanmar (UTC+6:30), Newfoundland (UTC-3:30), Afghanistan (UTC+4:30), Marquesas (UTC-9:30). Affects: Tehran Stock Exchange (TSE) trading, Iranian Solar Hijri New Year Nowruz celebrations.
About Eastern Standard Time (EST)
Eastern Standard Time (EST, IANA: America/New_York, America/Toronto) is the time zone for the US Eastern Seaboard and Canadian eastern provinces, set at UTC-5:00. EST is the most economically and politically significant US time zone, serving the NYC-Washington DC-Boston-Atlanta-Miami corridor of ~150 million people across the entire US Eastern region (New York, Pennsylvania, Massachusetts, Connecticut, Rhode Island, Vermont, New Hampshire, Maine, New Jersey, Delaware, Maryland, Virginia, West Virginia, North Carolina, South Carolina, Georgia, Florida except panhandle, Ohio, Kentucky eastern, Tennessee eastern, Indiana most, Michigan most), eastern Canada (Quebec, Ontario), and the Caribbean (Bahamas, Cuba, Jamaica, Haiti, Panama since 1908). EST observes DST per Energy Policy Act 2005 (switching to EDT = UTC-4:00 from March to November). NYSE official market hours 09:30-16:00 EST/EDT, Wall Street financial reporting, US Federal Government Washington DC working hours, and US Capitol legislative sessions all reference EST/EDT. The historical 'Big Three' US TV-network prime-time was 8-11 PM EST.