Rivista | Annali di Ca’ Foscari. Serie orientale
Fascicolo | 50 | 2014
Articolo | On the Era of Yazdegard III and the Cycles of the Iranian Solar Calendar
On the Era of Yazdegard III and the Cycles of the Iranian Solar Calendar
Abstract
The well-known Persian solar era (Yazdegardī 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. Are here analyzed 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, it is here observed that, following the statement of an outstanding figure of astronomer of the 10th century CE, the first year of the Yazdegardī 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.
Pubblicato 01 Dicembre 2014 | Lingua: en
Copyright © 2014 Simone Cristoforetti. This is an open-access work distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction is permitted, provided that the original author(s) and the copyright owner(s) are credited and that the original publication is cited, in accordance with accepted academic practice. The license allows for commercial use. No use, distribution or reproduction is permitted which does not comply with these terms.
Permalink http://doi.org/10.14277/2385-3042/8p
