Yazidi Week Number Calculator

Enter the date values and the tool computes the result for the yazidi calendar system.

1. 1

   Step 1

   Enter your date in the Yazidi calendar: day, month, and year.

2. 2

   Step 2

   We apply the Yazidi epoch and leap rules — epoch 631 CE (Yazidi year ≈ 2026 − 630 = 1396).

3. 3

   Step 3

   Read the result exact to the day — Yazidi leap years (365–366 days) applied automatically.

• 1

  This Yazidi Week Number follows Yazidi calendar rules — its own epoch, month lengths, and leap years — so the result can differ from a Gregorian-based calculation of the same date; treat the calendar system as part of the input.

• 2

  For deadlines tied to authorities or contracts, confirm which calendar the deadline officially uses before converting it here — a Yazidi date read in the wrong system can be off by days or even a full year.

• 3

  Enter the Yazidi dates in YYYY-MM-DD format to avoid ambiguity — some conventions read 03/04 as March fourth and others as April third, and a swapped month and day silently shifts every result this page derives.

• Week numbering is convention-dependent: ISO weeks start Monday and anchor week 1 to the first Thursday, while other schemes start Sunday or anchor differently. A Yazidi week number is only comparable inside the same convention.

• Reusing a memorized constant — fixed day counts, epoch offsets — instead of the Yazidi rules drifts silently across years because leap days accumulate differently per system. Recompute with the tool rather than adding offsets by hand.