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Convert Iran Standard Time to East Africa Time

Instantly convert Iran Standard Time (IRST) to East Africa Time (EAT) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Iran Standard Time

08:50:48 AM

Wed, Jun 24 (IRST)

East Africa Time

08:20:48 AM

Wed, Jun 24 (EAT)

EAT is -0.5 hours from IRST

Convert a Specific Time

IRST

24-Hour Comparison

IRSTEAT
12:00 AM11.5:00 PM(-1d)
1:00 AM0.5:00 AM
2:00 AM1.5:00 AM
3:00 AM2.5:00 AM
4:00 AM3.5:00 AM
5:00 AM4.5:00 AM
6:00 AM5.5:00 AM
7:00 AM6.5:00 AM
8:00 AM7.5:00 AM
9:00 AM8.5:00 AM
10:00 AM9.5:00 AM
11:00 AM10.5:00 AM
12:00 PM11.5:00 AM
1:00 PM0.5:00 PM
2:00 PM1.5:00 PM
3:00 PM2.5:00 PM
4:00 PM3.5:00 PM
5:00 PM4.5:00 PM
6:00 PM5.5:00 PM
7:00 PM6.5:00 PM
8:00 PM7.5:00 PM
9:00 PM8.5:00 PM
10:00 PM9.5:00 PM
11:00 PM10.5:00 PM

How to Convert Iran Standard Time to East Africa Time

Formula

To convert Iran Standard Time (IRST) to East Africa Time (EAT): Convert IRST to EAT

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 East Africa Time (EAT)

East Africa Time (EAT, IANA: Africa/Nairobi, Africa/Addis_Ababa) is the civil time for East African countries, set at UTC+3:00 year-round (no DST). EAT serves approximately 320 million people across: Kenya, Tanzania, Uganda, Ethiopia, Eritrea, Djibouti, Somalia, South Sudan, Comoros, Madagascar (mainland — UTC+3), and Mayotte (French territory — UTC+3). EAT shares the same UTC offset as Moscow Standard Time (MSK), Saudi Arabian Standard Time (AST-SA), Turkey Time (TRT), and Eastern European Summer Time (EEST) — making coordination with the Middle East and Russia simple year-round. Major EAT cities: Cairo (22M metro — uses EET/CAT not EAT), Nairobi Kenya (4.4M city, 9M metro — diplomatic + UN headquarters for East Africa), Addis Ababa Ethiopia (5M city, 5.5M metro — African Union headquarters), Dar es Salaam Tanzania (5M city, 7M metro), Kampala Uganda (1.7M city, 4M metro), Mogadishu (2.6M), Khartoum (Sudan — uses CAT not EAT). Affects: Nairobi Stock Exchange (NSE) trading, Serengeti / Maasai Mara safari schedules, Kilimanjaro climbing-permit scheduling.

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