Isfahan
UTC+3:30Iran · IRST
Tue, 15 Sept 2026
Timezone Guide
Isfahan, Iran runs on UTC+3:30. This time zone stays fixed year-round at UTC+3:30 — daylight saving time is not observed. There is a 7.5-hour difference between Isfahan and New York. Standard 9-to-6 working hours overlap for about 1.5 hours a day with New York. A good time to connect: 16:30–18:00 in Isfahan lines up with 09:00–10:30 in New York. There is a 2.5-hour difference between Isfahan and London. Standard 9-to-6 working hours overlap for about 6.5 hours a day with London. A good time to connect: 11:30–18:00 in Isfahan lines up with 09:00–15:30 in London. There is a 5.5-hour difference between Isfahan and Tokyo. Standard 9-to-6 working hours overlap for about 3.5 hours a day with Tokyo. A good time to connect: 09:00–12:30 in Isfahan lines up with 14:30–18:00 in Tokyo. This timezone is also shared with cities such as Tehran, Shiraz, Tabriz. Keeping these offsets in mind makes it easier to schedule calls or travel to and from Isfahan.
Practical Info
Isfahan (Iran) is home to roughly 2.2M people. Today brings about 14.2 hours of daylight: sunrise at 05:00, sunset at 19:12. This time zone stays fixed year-round at UTC+3:30 — daylight saving time is not observed. It sits in the Northern Hemisphere, about 33° north of the equator. Traffic drives on the right.
Flag
Iran
Capital
Tehran
Continent
Asia
Time Zone
IRST · Asia/Tehran
Coordinates
32.65°N, 51.67°E
Currency
IRR (﷼)
Calling Code
+98
Driving Side
Right
Hemisphere
Northern
Language
Persian
Measurement System
Metric
Did You Know?
Half the World
A 17th-century saying held that Isfahan is half the world, and Naqsh-e Jahan Square — roughly 160 by 510 metres — is one of the largest public squares anywhere, laid out in 1602 as a setting for polo, markets and two mosques.
The clock: Iran kept a half-hour offset at UTC+3:30 and abolished its seasonal change in 2022. Isfahan's Si-o-se-pol bridge has 33 arches and has spanned a river that is now frequently dry.
Annual Daylight
Working Hours
8.5h overlap