Convert Indochina Time to Iran Standard Time
Instantly convert Indochina Time (ICT) to Iran Standard Time (IRST) with our free online calculator.
Indochina Time
12:20:55 PM
Wed, Jun 24 (ICT)
Iran Standard Time
08:50:55 AM
Wed, Jun 24 (IRST)
Convert a Specific Time
24-Hour Comparison
| ICT | IRST |
|---|---|
| 12:00 AM | 8.5:00 PM(-1d) |
| 1:00 AM | 9.5:00 PM(-1d) |
| 2:00 AM | 10.5:00 PM(-1d) |
| 3:00 AM | 11.5:00 PM(-1d) |
| 4:00 AM | 0.5:00 AM |
| 5:00 AM | 1.5:00 AM |
| 6:00 AM | 2.5:00 AM |
| 7:00 AM | 3.5:00 AM |
| 8:00 AM | 4.5:00 AM |
| 9:00 AM | 5.5:00 AM |
| 10:00 AM | 6.5:00 AM |
| 11:00 AM | 7.5:00 AM |
| 12:00 PM | 8.5:00 AM |
| 1:00 PM | 9.5:00 AM |
| 2:00 PM | 10.5:00 AM |
| 3:00 PM | 11.5:00 AM |
| 4:00 PM | 0.5:00 PM |
| 5:00 PM | 1.5:00 PM |
| 6:00 PM | 2.5:00 PM |
| 7:00 PM | 3.5:00 PM |
| 8:00 PM | 4.5:00 PM |
| 9:00 PM | 5.5:00 PM |
| 10:00 PM | 6.5:00 PM |
| 11:00 PM | 7.5:00 PM |
How to Convert Indochina Time to Iran Standard Time
Formula
To convert Indochina Time (ICT) to Iran Standard Time (IRST): Convert ICT to IRST
About Indochina Time (ICT)
Indochina Time (ICT, IANA: Asia/Bangkok, Asia/Ho_Chi_Minh) is the civil time of mainland Southeast Asia (excluding Myanmar + Indonesia), set at UTC+7:00 year-round (no DST). ICT serves approximately 250 million people across: Thailand, Vietnam, Cambodia, Laos, Christmas Island (Australian territory in Indian Ocean), Java + Sumatra + western Indonesia (which uses Western Indonesian Time WIB = identical UTC+7 offset). ICT shares its offset with Krasnoyarsk Time (Russia, UTC+7) and Davis Antarctica research station. Major ICT cities: Bangkok Thailand (10.7M metro — Southeast Asia's largest tourist destination + ASEAN economic hub), Ho Chi Minh City Vietnam (10M city, 14M metro — formerly Saigon, Vietnam's largest city), Hanoi Vietnam (8M metro — capital), Jakarta Indonesia (10.5M city, 35M metro — uses WIB which is identical to ICT but a different zone-name), Phnom Penh Cambodia (2M), Vientiane Laos (820K). Affects: SET (Stock Exchange of Thailand) trading hours, HOSE + HNX (Vietnam stock exchanges) trading, Phnom Penh Securities Exchange (CSX) hours, Bangkok BTS Skytrain + MRT subway operating hours, and ASEAN diplomatic-meeting schedules.
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.