No central authority

Zoroastrianism

around 120,000 adherents worldwide.

Estimate from Pew Research Center — The Future of World Religions.

What the sources state

The World Zoroastrian Organisation describes itself as an international organisation created to support Zoroastrians globally with aid, advocacy, education and community.

“The World Zoroastrian Organisation is an international organisation created to support Zoroastrians globally with aid, advocacy, education, and community.”

Source: World Zoroastrian Organisation

The World Zoroastrian Organisation states that all Zoroastrians are welcome to join it, and that it also welcomes members who are not Zoroastrian.

“All Zoroastrians are welcome to join WZO and it also welcomes membership from non-Zoroastrian supporters and friends.”

Source: World Zoroastrian Organisation

Every quotation above was checked against its source on 3 September 2026.

Authority

Zoroastrianism has no central authority.

Three calendar variants are in concurrent use — Shahanshahi, Kadmi and Fasli — and they differ by up to a month. Dates must be emitted per variant.

Communities

Parsi

Irani

Observances in 2026

Observance	Dates	How certain
Nowruz (Fasli reckoning)	21 March 2026	Calculated
Navroze (Kadmi reckoning)	16 July 2026	Calculated
Navroze (Shahanshahi reckoning)	15 August 2026	Calculated

Sources

Federation of Zoroastrian Associations of North America
Zoroastrian communities in North America
World Zoroastrian Organisation
Zoroastrian communities internationally.
Avesta.org
Zoroastrian scripture archive.
Parsi Khabar
A Parsi community publication that publishes the current day in the Shahanshahi, Kadmi and Fasli reckonings.
Zoroastrian Trust Funds of Europe
The Zoroastrian community in the United Kingdom and Europe. Established in 1861 and the oldest Asian faith-based voluntary organisation in the UK.

No expert review. Accuracy here rests on continuous machine verification of every quotation against its source. Spotted an error? Corrections are answered within five working days.