Convert Iran Standard Time to Eastern European Summer Time
Instantly convert Iran Standard Time (IRST) to Eastern European Summer Time (EEST) with our free online calculator.
Iran Standard Time
08:50:48 AM
Wed, Jun 24 (IRST)
Eastern European Summer Time
08:20:48 AM
Wed, Jun 24 (EEST)
Convert a Specific Time
24-Hour Comparison
| IRST | EEST |
|---|---|
| 12:00 AM | 11.5:00 PM(-1d) |
| 1:00 AM | 0.5:00 AM |
| 2:00 AM | 1.5:00 AM |
| 3:00 AM | 2.5:00 AM |
| 4:00 AM | 3.5:00 AM |
| 5:00 AM | 4.5:00 AM |
| 6:00 AM | 5.5:00 AM |
| 7:00 AM | 6.5:00 AM |
| 8:00 AM | 7.5:00 AM |
| 9:00 AM | 8.5:00 AM |
| 10:00 AM | 9.5:00 AM |
| 11:00 AM | 10.5:00 AM |
| 12:00 PM | 11.5:00 AM |
| 1:00 PM | 0.5:00 PM |
| 2:00 PM | 1.5:00 PM |
| 3:00 PM | 2.5:00 PM |
| 4:00 PM | 3.5:00 PM |
| 5:00 PM | 4.5:00 PM |
| 6:00 PM | 5.5:00 PM |
| 7:00 PM | 6.5:00 PM |
| 8:00 PM | 7.5:00 PM |
| 9:00 PM | 8.5:00 PM |
| 10:00 PM | 9.5:00 PM |
| 11:00 PM | 10.5:00 PM |
How to Convert Iran Standard Time to Eastern European Summer Time
Formula
To convert Iran Standard Time (IRST) to Eastern European Summer Time (EEST): Convert IRST to EEST
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 European Summer Time (EEST)
Eastern European Summer Time (EEST, IANA: Europe/Athens during DST window) is the summer-time variant of EET, set at UTC+3:00 — observed from the last Sunday of March to the last Sunday of October per EU Directive 2000/84/EC. EEST shares the same UTC offset as Moscow Standard Time (MSK), Saudi Arabia Standard Time (AST-SA), and East Africa Time (EAT). After the 2018 EU proposal to abolish twice-yearly clock changes (postponed indefinitely), the question of whether EEST countries would permanently stay on summer time (UTC+3) or revert to year-round EET (UTC+2) remains unresolved. EEST serves the same ~50 million population as EET (Greece, Cyprus, Bulgaria, Romania, Moldova, Ukraine, Lithuania, Latvia, Estonia, Finland). Affects: ASE (Athens Stock Exchange) summer trading hours, summer-festival schedules in Greek islands (Mykonos, Santorini, Ios), Finnish midsummer Juhannus celebrations, and Black Sea cruise-ship port arrival times at Constanța Romania + Varna Bulgaria + Odesa Ukraine.