Daylight saving time in Iran

Daylight saving time in Iran was the practice of setting the clock forward by one hour between the first day of Farvardin (21–22 March) in the Iranian calendar and the last day of Shahrivar (21–22 September), which has been observed during years 1978–1980, 1991–2005, and 2008–2023.[1]

World map. Europe, most of North America, parts of southern South America and southeastern Australia, and a few other places use DST. Most of equatorial Africa and a few other places near the equator have never used DST as the seasons are not marked by drastic changes in light. The rest of the landmass is marked as formerly using DST.
Daylight saving time regions:
  Northern hemisphere summer
  Southern hemisphere summer
  Formerly used daylight saving time
  Never used daylight saving time
  1. ^ "Time Zone & Clock Changes in Tehran, Iran". timeanddate.com. Retrieved 13 May 2022.