Yazidi Calendar (Çarşema Sor) (雅茲迪曆)

ÇARŞEMA SOR — Red Wednesday, the Yazidi New Year — and the Yazidi era, served by the tradition's own double-sourced rule: the first WEDNESDAY of Nîsan/April in the Julian ('Eastern') calendar, equivalently the first Wednesday on or after 14 April Gregorian in the current century-window (the 13-day-offset range 1900–2099 is the engine's honest range, stated rather than silently extrapolated). Wednesday is the Yazidi holy day — the day of Tawûsî Melek, the Peacock Angel — and the New Year rule is that sanctity made calendar. VERIFIED: the published celebrations reproduce exactly (19 April 2023, opening Yazidi year 6773 — the era anchor; 16 April 2025, two independent reports; 2024 and 2026 following from the same arithmetic), and three THEOREMS hold at load: the computed day is always a Wednesday, always within 14–20 April, and consecutive New Years sit exactly 52 or 53 weeks apart. Any date returns its Yazidi era year (CE + 4750, turning at Çarşema Sor), the Wednesday-sanctity flag, and this year's and next year's New Year. The Yazidi people become the catalogue's 33rd tradition — served for cultural reference, with respect for a community whose calendar survived what its people survived. Pure computation, no LLM.

Cost: 2 TIAN Points per call. tRPC procedure yazidi.date.