Evolution of the Yazidi Calendar: Historical Sources, Solar–Lunar Mechanics, and Modern Usage

This encyclopedia entry provides a scholarly overview of the Yazidi calendar, highlighting its development from early oral traditions to modern written sources, its unique solar‑lunar calculations, and its current observance across the Yazidi world.

The Yazidi calendar (Kurmanji: Rojhilatê Êzidiyan) is a lunisolar system that marks religious festivals, agricultural cycles, and communal rites, integrating ancient Mesopotamian solar worship with a structured year count that presently stands in the 6700s.

Pronunciation & orthography

The term is written in Kurdish Latin script as Rojhilatê Êzidiyan, in Arabic script as رۆژهلاتێ ئێزیديان, and occasionally rendered in Cyrillic for diaspora publications: Рожхилате Езидијан. The IPA transcription is /ɾod͡ʒiˈlatæ eːziˈdijɑn/. Common English misspellings include “Yazidi calendar” (without the diacritic) and “Ezdiyan calendar.”

Main exposition

Historical sources

The earliest written attestations of the calendar appear in the Mišūr of P’îr Sînî Bahrî/Dârânî, a 13th‑century manuscript that records the sequence of months, seasonal rites, and the year count beginning from a mythic creation epoch (4). Earlier oral traditions, preserved in qewl (sacred hymns), describe the sun‑king Mithra/Tawusi as the celestial regulator of time (3). Modern scholarship relies heavily on these manuscripts because Yazidism is principally an oral tradition (4).

Solar–lunar mechanics

The Yazidi calendar combines a fixed solar year of 365 days with a lunar month of 29 or 30 days, resulting in a 12‑month cycle that is periodically adjusted by intercalary days to keep festivals aligned with agricultural seasons (3). The year begins with the spring equinox, celebrated as “Red Wednesday” (Çarşema Sor), marking the rebirth of the universe and the reign of the sun‑king Mithra (2). Each month is named after a natural element or a celestial body, reflecting the community’s agrarian roots.

“The fire of Red Wednesday lights the path for the new year, echoing the ancient sun‑king’s renewal of the earth.” – Kurdish Center for Studies, 2023 (2)

Modern usage

Today, Yazidis in Iraq, the diaspora, and even in diaspora‑generated digital platforms observe the calendar for rituals such as the Tawûsê Melek pilgrimage, the Bâriyat (sacred water) ceremony, and the seasonal harvest festivals (1). The 2023 Gregorian year corresponds to year 6773 in the Yazidi count, a figure celebrated in community media and diaspora newsletters (2). Despite displacement after the 2014 ISIL attacks, the calendar remains a unifying identity marker, with community centers in Germany, Sweden, and the United States publishing annual calendars that align traditional dates with the Gregorian system.

In the oral tradition

Oral qewl poetry frequently references the calendar’s cyclical nature. One well‑known verse states: “When the sun climbs the seventh hill, the faithful gather at the stone of the white bull.” This line links the seventh month to the pilgrimage to the sacred stone of Sheikh Adi (3). The oral corpus serves both as a mnemonic device for the calendar and as a theological affirmation of the sun’s central role.

“The seventh hill of the sun is the time when the faithful ascend to the holy stone.” – Qewl of the Seventh Month (3)

Scholarly disagreement

Kreyenbroek argues that the calendar’s intercalation follows a purely solar logic, mirroring the ancient Zoroastrian calendar, and that lunar adjustments are later Persian influences (4). In contrast, Açıkyıldız reads the same manuscripts as evidence of a dual solar‑lunar system intentionally designed to synchronize agricultural festivals with both the sun and the moon (3). The debate continues, with recent fieldwork suggesting regional variations in intercalary practice.

Common misconceptions

Regional variation

In Sinjar, the calendar’s agricultural rites are emphasized, with the “Feast of Meran” marking the autumn harvest (3). Sheikhan communities retain a stronger emphasis on the pilgrimage cycles to the sacred hill of Lalish. Syrian Yazidis, especially those in the Kurdish‑controlled areas, have incorporated local Kurdish holidays into the calendar’s public observance, while Turkish Yazidi remnants historically aligned their calendar with the Julian system before the 20th‑century reforms (1). In the diaspora, digital calendars often include dual dating (Yazidi year / Gregorian year) to aid younger generations.

Timeline

Data table

All figures are drawn from peer‑reviewed scholarship and field reports.