Persian (Jalali) Add Days to Date

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

1. 1

   Step 1

   Enter your date in the Persian (Jalali) calendar: day, month, and year.

2. 2

   Step 2

   We walk the real Persian (Jalali) calendar — a solar year of 365 days (366 in leap years) — instead of a flat 30-day-month average.

3. 3

   Step 3

   The output breaks down years, months, and days on real Persian (Jalali) lengths.

• 1

  This Persian (Jalali) Add Days to Date follows Persian (Jalali) 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

  Enter the Persian (Jalali) 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.

• 3

  Watch century boundaries and very old dates in the Persian (Jalali) system: historical calendars dropped or added days when they were adopted, which is invisible in daily use but material for long-range historical calculations here.

• Epochs are not interchangeable: every calendar owns its day zero, and year arithmetic borrowed across systems shifts a day-offset calculation by years. Confirm the persian (jalali) epoch (the Persian year ≈ 2026 − 621 = 1405) before comparing dates.

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