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|Title:||On the Era of Yazdegard III and the Cycles of the Iranian Solar Calendar|
|Publisher:||Venezia: Edizioni Ca' Foscari|
|Abstract:||The well-known Persian solar era (Yazdegardi era) presents some problems. It is believed to have started with the official rise to the throne of the last Sasanian sovereign Yazdegard III in 632 CE and it is characterized by the one-day backward motion of all dates of the relative calendar every four Julian years. I here analyze some Arabic and Persian sources of the Islamic age in order to establish the kind of cycle or cycles that the Iranian solar calendar was based upon. In this regard, I observe that, following the statement of an outstanding figure of astronomer of the 10th century CE, the first year of the Yazdegardi era should have fallen on the third year of a four-yearly cycle of one-day backward motion of that calendar, and not in the first one, as is taken for granted in the available conversion tables.|
|Appears in Collections:||Annali di Ca' Foscari. Serie orientale|
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