Convert Iran Standard Time to Gulf Standard Time
Instantly convert Iran Standard Time (IRST) to Gulf Standard Time (GST) with our free online calculator.
Iran Standard Time
08:50:48 AM
Wed, Jun 24 (IRST)
Gulf Standard Time
09:20:48 AM
Wed, Jun 24 (GST)
Convert a Specific Time
24-Hour Comparison
| IRST | GST |
|---|---|
| 12:00 AM | 0.5:00 AM |
| 1:00 AM | 1.5:00 AM |
| 2:00 AM | 2.5:00 AM |
| 3:00 AM | 3.5:00 AM |
| 4:00 AM | 4.5:00 AM |
| 5:00 AM | 5.5:00 AM |
| 6:00 AM | 6.5:00 AM |
| 7:00 AM | 7.5:00 AM |
| 8:00 AM | 8.5:00 AM |
| 9:00 AM | 9.5:00 AM |
| 10:00 AM | 10.5:00 AM |
| 11:00 AM | 11.5:00 AM |
| 12:00 PM | 0.5:00 PM |
| 1:00 PM | 1.5:00 PM |
| 2:00 PM | 2.5:00 PM |
| 3:00 PM | 3.5:00 PM |
| 4:00 PM | 4.5:00 PM |
| 5:00 PM | 5.5:00 PM |
| 6:00 PM | 6.5:00 PM |
| 7:00 PM | 7.5:00 PM |
| 8:00 PM | 8.5:00 PM |
| 9:00 PM | 9.5:00 PM |
| 10:00 PM | 10.5:00 PM |
| 11:00 PM | 11.5:00 PM |
How to Convert Iran Standard Time to Gulf Standard Time
Formula
To convert Iran Standard Time (IRST) to Gulf Standard Time (GST): Convert IRST to GST
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 Gulf Standard Time (GST)
Gulf Standard Time (GST, IANA: Asia/Dubai, Asia/Muscat) is the civil time of the Arabian Gulf states, set at UTC+4:00 year-round (no DST). GST serves approximately 60 million people across: United Arab Emirates (UAE), Oman, Azerbaijan, Armenia, Georgia (most), Mauritius, Réunion (French territory), Seychelles, Russia's Samara Time region. The 'Gulf Standard Time' specifically refers to UAE + Oman in regional aviation/business usage. GST shares the same UTC offset as Mauritius Time (MUT), Armenia Time (AMT), Azerbaijan Time (AZT), Georgia Time (GET), and is +1 hour ahead of Moscow / Saudi Arabia. Major GST cities: Dubai (3.5M city, 4.8M metro — UAE + global trade hub), Abu Dhabi (1.5M city, 2.9M metro — UAE capital), Sharjah (1.7M), Muscat Oman (1.7M metro — capital), Salalah Oman (370K), Baku Azerbaijan (2.3M), Yerevan Armenia (1.1M), Tbilisi Georgia (1.2M). Affects: DFM (Dubai Financial Market) + ADX (Abu Dhabi Securities Exchange) trading hours, Emirates Airlines / Etihad Airways hub-operations scheduling, Hajj/Umrah pilgrimage timings for travelers transiting Dubai, Dubai Expo + Burj Khalifa fountain shows + Dubai Mall operating hours.