Persian Calendar

The Iranian Solar Calendar, based on astronomical calculations, is one of the longest historical records currently used in Iran. The origin of the Persian calendar dates back to the 11th century when a group of astronomers such as Khayyam, best known today for his poetry especially The Rubaiyat, created the first calendar. Officially used in Iran and Afghanistan, the Solar Hijri calendar is one of the world's most accurate calendar systems.

The Iranian year begins on the day of the vernal equinox - the first day of spring. It consists of 365 days and 12 months of varying lengths which have retained their old Persian names. They are: Farvardin, Ordibehesht, Khordad; Tir, Mordad, Shahrivar; Mehr, Aban, Azar; Dey, Bahman, and Esfand. The first six months are each 31 days, the next five 30 days, and the last 29 except in leap years, when it is 30 days. The solar calendar or Persian calendar is used in everyday function.The lunar calendar or Islamic calendar is not used in the same sense as the solar calendar but essentially Iranian need it to mark religious holidays and the Gregorian calendar is used for world history. You can check the chart below to find out the equivalent of Persian dates in Georgian calendar.

                                                                                                          

Persian month	Start date	duration
Farvardin	21st of March	31
Ordibehsht	21st April	31
Khordad	22 May	31
Tir	22nd Jun	31
Mordad	23rd July	31
Shahrivar	23rd August	31
Mehr	23rd September	30
Aban	23rd October	30
Azar	22nd November	30
Dey	2nd  December	30
Bahman	21st Jan	30
Esfand	20th February	29

Persian Calendar