Convert Singapore Time to Iran Standard Time
Instantly convert Singapore Time (SGT) to Iran Standard Time (IRST) with our free online calculator.
Singapore Time
01:20:58 PM
Wed, Jun 24 (SGT)
Iran Standard Time
08:50:58 AM
Wed, Jun 24 (IRST)
Convert a Specific Time
24-Hour Comparison
| SGT | IRST |
|---|---|
| 12:00 AM | 7.5:00 PM(-1d) |
| 1:00 AM | 8.5:00 PM(-1d) |
| 2:00 AM | 9.5:00 PM(-1d) |
| 3:00 AM | 10.5:00 PM(-1d) |
| 4:00 AM | 11.5:00 PM(-1d) |
| 5:00 AM | 0.5:00 AM |
| 6:00 AM | 1.5:00 AM |
| 7:00 AM | 2.5:00 AM |
| 8:00 AM | 3.5:00 AM |
| 9:00 AM | 4.5:00 AM |
| 10:00 AM | 5.5:00 AM |
| 11:00 AM | 6.5:00 AM |
| 12:00 PM | 7.5:00 AM |
| 1:00 PM | 8.5:00 AM |
| 2:00 PM | 9.5:00 AM |
| 3:00 PM | 10.5:00 AM |
| 4:00 PM | 11.5:00 AM |
| 5:00 PM | 0.5:00 PM |
| 6:00 PM | 1.5:00 PM |
| 7:00 PM | 2.5:00 PM |
| 8:00 PM | 3.5:00 PM |
| 9:00 PM | 4.5:00 PM |
| 10:00 PM | 5.5:00 PM |
| 11:00 PM | 6.5:00 PM |
How to Convert Singapore Time to Iran Standard Time
Formula
To convert Singapore Time (SGT) to Iran Standard Time (IRST): Convert SGT to IRST
About Singapore Time (SGT)
Singapore Time (SGT, IANA: Asia/Singapore) is the civil time of the Republic of Singapore, set at UTC+8:00 year-round (no DST). Singapore historically used UTC+7:30 (with Malaya) before 1982, then adjusted to UTC+8:00 in January 1982 to align with major regional trading partners China + Hong Kong + Malaysia. The Singapore Public Utilities Board oversees official timekeeping per the legal-time reference at the National University of Singapore. SGT is identical in offset to China Standard Time (CST), Malaysia Time (MYT), Hong Kong Time (HKT), Philippine Time (PHT), Western Australia Time (AWST), Brunei Time (BNT) — making coordination across the Asia-Pacific tropics seamless. SGT serves the city-state of Singapore's approximately 5.9 million residents (citizens + permanent residents + foreign workers). Despite its small geographic size (728 km² — smaller than New York City's 5 boroughs), Singapore is one of Asia's most important financial centers. Affects: SGX (Singapore Exchange) trading hours 09:00-17:00 SGT, Port of Singapore Authority shipping operations (the world's second-busiest container port after Shanghai), Changi Airport flight scheduling (often the world's #1-ranked airport), and the Marina Bay Sands hotel + Gardens by the Bay operating hours.
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.