Convert Iran Standard Time to Eastern Daylight Time
Instantly convert Iran Standard Time (IRST) to Eastern Daylight Time (EDT) with our free online calculator.
Iran Standard Time
08:50:59 AM
Wed, Jun 24 (IRST)
Eastern Daylight Time
01:20:59 AM
Wed, Jun 24 (EDT)
Convert a Specific Time
24-Hour Comparison
| IRST | EDT |
|---|---|
| 12:00 AM | 4.5:00 PM(-1d) |
| 1:00 AM | 5.5:00 PM(-1d) |
| 2:00 AM | 6.5:00 PM(-1d) |
| 3:00 AM | 7.5:00 PM(-1d) |
| 4:00 AM | 8.5:00 PM(-1d) |
| 5:00 AM | 9.5:00 PM(-1d) |
| 6:00 AM | 10.5:00 PM(-1d) |
| 7:00 AM | 11.5:00 PM(-1d) |
| 8:00 AM | 0.5:00 AM |
| 9:00 AM | 1.5:00 AM |
| 10:00 AM | 2.5:00 AM |
| 11:00 AM | 3.5:00 AM |
| 12:00 PM | 4.5:00 AM |
| 1:00 PM | 5.5:00 AM |
| 2:00 PM | 6.5:00 AM |
| 3:00 PM | 7.5:00 AM |
| 4:00 PM | 8.5:00 AM |
| 5:00 PM | 9.5:00 AM |
| 6:00 PM | 10.5:00 AM |
| 7:00 PM | 11.5:00 AM |
| 8:00 PM | 0.5:00 PM |
| 9:00 PM | 1.5:00 PM |
| 10:00 PM | 2.5:00 PM |
| 11:00 PM | 3.5:00 PM |
How to Convert Iran Standard Time to Eastern Daylight Time
Formula
To convert Iran Standard Time (IRST) to Eastern Daylight Time (EDT): Convert IRST to EDT
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 Daylight Time (EDT)
Eastern Daylight Time (EDT, IANA: America/New_York during DST window) is the summer-time variant of EST, set at UTC-4:00 — observed from the second Sunday in March to the first Sunday in November per the US Energy Policy Act of 2005. EDT shares the same UTC offset as Atlantic Standard Time (AST — observed year-round in Canadian Maritimes Nova Scotia/New Brunswick/PEI and in Caribbean Puerto Rico/USVI/Bermuda) and as Bolivia/Chile/Paraguay Standard Time. The 'spring forward' transition at 02:00 EDT in March is the largest single coordinated time change in human history, affecting ~150 million US East Coast residents simultaneously per US Census. Florida passed the Sunshine Protection Act in 2018 attempting to stay on EDT year-round, but it required US Congressional approval (US Code 15 §260a) which has not been granted as of 2024. EDT affects: US Federal Government tax-filing deadlines (IRS Form 1040 due 23:59 EDT on April 15), NFL Sunday Night Football scheduling, and US Supreme Court oral-argument schedules in DC.