Convert Iran Standard Time to China Standard Time
Instantly convert Iran Standard Time (IRST) to China Standard Time (CST) with our free online calculator.
Iran Standard Time
08:50:49 AM
Wed, Jun 24 (IRST)
China Standard Time
01:20:49 PM
Wed, Jun 24 (CST)
Convert a Specific Time
24-Hour Comparison
| IRST | CST |
|---|---|
| 12:00 AM | 4.5:00 AM |
| 1:00 AM | 5.5:00 AM |
| 2:00 AM | 6.5:00 AM |
| 3:00 AM | 7.5:00 AM |
| 4:00 AM | 8.5:00 AM |
| 5:00 AM | 9.5:00 AM |
| 6:00 AM | 10.5:00 AM |
| 7:00 AM | 11.5:00 AM |
| 8:00 AM | 0.5:00 PM |
| 9:00 AM | 1.5:00 PM |
| 10:00 AM | 2.5:00 PM |
| 11:00 AM | 3.5:00 PM |
| 12:00 PM | 4.5:00 PM |
| 1:00 PM | 5.5:00 PM |
| 2:00 PM | 6.5:00 PM |
| 3:00 PM | 7.5:00 PM |
| 4:00 PM | 8.5:00 PM |
| 5:00 PM | 9.5:00 PM |
| 6:00 PM | 10.5:00 PM |
| 7:00 PM | 11.5:00 PM |
| 8:00 PM | 0.5:00 AM(+1d) |
| 9:00 PM | 1.5:00 AM(+1d) |
| 10:00 PM | 2.5:00 AM(+1d) |
| 11:00 PM | 3.5:00 AM(+1d) |
How to Convert Iran Standard Time to China Standard Time
Formula
To convert Iran Standard Time (IRST) to China Standard Time (CST): Convert IRST to CST
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 China Standard Time (CST)
China Standard Time (CST, IANA: Asia/Shanghai) is the unified civil time of the People's Republic of China, set at UTC+8:00 year-round (no DST). Despite China's vast east-west extent (~5,200 km from Xinjiang's western border at 73°E to Heilongjiang's eastern border at 135°E — 62° of longitude or ~4 hours of solar time), the entire country uses a single time zone since 1949 (consolidated from 5 separate zones used during the Republic of China era). This means Kashgar Xinjiang sees solar noon at approximately 14:00 CST in summer, while Shanghai sees solar noon at approximately 11:50 CST — a stark practical discrepancy. Hong Kong Time (HKT) and Macau Time (MOT) are identical at UTC+8 but use different IANA identifiers for historical reasons. CST serves approximately 1.42 billion people. CST is identical in offset to Singapore Time (SGT), Malaysia Time (MYT), Philippine Time (PHT), Australian Western Standard Time (AWST), Hong Kong Time (HKT). Major CST cities: Shanghai (24M), Beijing (21.5M), Chongqing (32M), Guangzhou (15M), Shenzhen (12.5M), Chengdu (16.3M), Tianjin (13.7M), Wuhan (11M), Xi'an (13M), Hangzhou (11.9M). Affects: SSE + SZSE stock exchanges, Beijing Central Government working hours.