Zoroaster - Date

Date

The date of Zoroaster, i.e., the date of composition of the Old Avestan gathas, is unknown. Classical writers such as Plutarch proposed dates prior to 6000 BC. Dates proposed in scholarly literature diverge widely, between the 18th and the 6th centuries BC.

Until the late 17th century, Zoroaster was generally dated to about the 6th century BC, which coincided with both the "Traditional date" (see details below) and historiographic accounts (Ammianus Marcellinus xxiii.6.32, 4th century AD). However, already at the time (late 19th century), the issue was far from settled.

The "Traditional date" originates in the period immediately following Alexander the Great's conquest of the Achaemenid Empire in 330 BC. The Seleucid kings who gained power following Alexander's death instituted an "Age of Alexander" as the new calendrical epoch. This did not appeal to the Zoroastrian priesthood who then attempted to establish an "Age of Zoroaster." To do so, they needed to establish when Zoroaster had lived, which they accomplished by counting back the length of successive generations until they concluded that Zoroaster must have lived "258 years before Alexander." This estimate then re-appeared in the 9th- to 12th-century texts of Zoroastrian tradition, which in turn gave the date doctrinal legitimacy, especially since it was made plausible also by the observational history of the Pleiades in the Geoponica that indicates Zoroaster as a principal source of some observations. In the early part of the 20th century, this remained the accepted date (subject to the uncertainties of the 'Age of Alexander') for a number of reputable scholars, among them Hasan Taqizadeh, a recognized authority on the various Iranian calendars, and hence became the date cited by Henning and others.

By the late 19th century, scholars such as Bartholomea and Christensen noted problems with the "Traditional date," namely in the linguistic difficulties that it presented. The Old Avestan language of the Gathas (which are attributed to the prophet himself) is still very close to the Sanskrit of the Rigveda. Therefore, it seemed implausible that the Gathas and Rigveda could be more than a few centuries apart, suggesting a date for the oldest surviving portions of the Avesta of roughly the 2nd millennium BCE.

A date of 11th/10th century BC date is sometimes considered among Iranists, who in recent decades found that the social customs described in the Gathas roughly coincide with what is known of other pre-historical peoples of that period. Supported by this historical evidence, the "Traditional date" can be conclusively ruled out, and the discreditation can to some extent be supported by the texts themselves: The Gathas describe a society of bipartite (priests and herdsmen/farmers) nomadic pastoralists with tribal structures organized at most as small kingdoms. This contrasts sharply with the view of Zoroaster having lived in an empire, at which time society is attested to have had a tripartite structure (nobility/soldiers, priests, and farmers). Although a slightly earlier date (by a century or two) has been proposed on the grounds that the texts do not reflect the migration onto the Iranian Plateau, it is also possible that Zoroaster lived in one of the rural societies that remained in Central Asia.