Gregorian · 1988
Wednesday, 20 April 1988
Eastern reckoning
First Wednesday of Eastern April
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Annual reference · 1988
Yazidi festival dates for 1988
A calculated Gregorian index for five major observances, with the Eastern/Julian rule, regional limits, and sources visible on the page.
Calculation shown
Specialist sources
1600–4099
Date converter
One day, two calendar labels
“Eastern” here means the Julian calendar used to reckon the fixed dates in the cited Yazidi-studies sources. It does not assign a speculative Yazidi era year.
1988 Gregorian index
Five observances, with their limits visible
Gregorian · 1988
6–12 October 1988
Eastern reckoning
23–29 Eastern September (main seven-day index)
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Gregorian · 1988
13–15 December 1988
Eastern reckoning
Tuesday–Thursday before the first Friday of Eastern December
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Gregorian · 1988
Torî: 27 December 1987–3 January 1988; Çolî: 10–17 January 1988
Eastern reckoning
Regional winter cycles; no single universal date
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Gregorian · 1988
Friday, 16 December 1988
Eastern reckoning
First Friday of Eastern December
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Calculation method
Transparent reckoning, not a black box
The tool treats “Eastern calendar” as the Julian civil calendar named in the cited scholarly descriptions. It converts both systems through a Julian Day Number—a continuous day count—then applies the stated weekday or date rule.
- 1Normalize the day
Gregorian and Julian labels are mapped to the same continuous day number.
- 2Apply the observance rule
For example: first Wednesday of Eastern April, or first Friday of Eastern December.
- 3Return the civil date
The result is converted back to Gregorian for the annual index and displayed with its source rule.
Not a universal religious ruling. Yazidi observance is living and regionally varied. Community and religious authorities remain the authority for actual practice.
The gap is not always thirteen days. It is 13 days for 1900–2099, but changes across centuries because Gregorian and Julian leap-year rules differ. The converter calculates it rather than hard-coding 13.
No invented era year. Claims for a single ancient Yazidi year count are not consistently established in the specialist sources used here, so the tool labels Julian dates plainly.
Sources & authority
What this reckoning is based on
Academic sources define the rules; an official regional calendar cross-checks contemporary civil dates; a community calendar supplies the labelled Batizmî windows.
Khanna Omarkhali
The Yezidi Religious Textual Tradition: From Oral to Written
Harrassowitz, 2017. The calendar synopsis identifies the first Wednesday of Eastern April, the first Friday of Eastern December, and the Eastern dates of the Assembly.
Khalil Jindy Rashow
“Jažn-ā Jamāʿiya,” Encyclopaedia Iranica
A specialist account of the Assembly, its Eastern-calendar span, and its rites at Lalish.
Kurdistan Regional Government
Official Calendar 2026
Contemporary official cross-check: Yazidi New Year on 15 April, Jama Feast on 6–12 October, and Ezi Day Feast on 18 December 2026.
Eszter Spät
“Persecution and the Development of Yezidi Ritual Life”
Kurdish Studies 4(2), 2016. Documents Batizmî as a mid-January Çêlka observance and stresses the multiform character of Yazidi ritual traditions.
SJA — Säkularer Humanismus und Jesidisches Archiv
Jesidischer Festkalender
Community calendar used for the separately labelled Torî and Çolî Batizmî reference windows.