text: From 15 March 1079, when the calendar had slipped a further eighteen days, the araji calendar was reformed by repeating the first eighteen days of Frawardin. Thus 14 March was 18 Frawardin qadimi (old) or farsi (Persian) and 15 March was 1 Frawardin jalali or maleki (royal). This new calendar was astronomically calculated, so that it did not have epagemonai – the months began when the sun entered a new sign of the zodiac.
  About 120 years after the reform of AD 1006, when the vernal equinox was starting to fall in Ardawahisht, Zoroastrians made it again coincide with nowruz by adding a second Spandarmad. This Shensai calendar was a month behind the qadimi still used in Persia, being used only by the Zoroastrians in India, the Parsees. On 6 June 1745 (Old Style) some Parsees re-adopted the qadimi calendar, and in 1906 some adopted the Fasli calendar in which 1 Frawardin was equated with 21 March, so that there was a sixth epagomenal day every four years.   In 1911 the jalali calendar became the official national calendar of Persia. Some Zoroastrians in Persia now use the Fasli calendar, having begun changing to it in 1930.
  Modern calendar: Solar Hijri (SH)