Samaritan to Assyrian Date Converter

Enter a date in the Samaritan calendar and the tool returns the equivalent date in the Assyrian calendar using the standard relationship between the two systems.

1. 1

   Step 1

   Enter the complete Samaritan date — day, month, and year.

2. 2

   Step 2

   We anchor each system's epoch, then convert day by day — Samaritan: a 13th leap month lands 7 times in each 19-year cycle; Assyrian: the Assyrian year = 2026 + 4750 = 6776.

3. 3

   Step 3

   Read the exact Assyrian date: a year spanning 365–366 days, counted month by month.

• 1

  Samaritan and Assyrian dates do not map one-to-one — the two systems start from different epochs and count leap years differently, so enter the full Samaritan date and read the Assyrian equivalent instead of shifting the year by a fixed offset.

• 2

  Watch century boundaries and very old dates in the Samaritan–Assyrian 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.

• 3

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

• Reversing the direction is a silent trap: converting from the Assyrian calendar back to the Samaritan calendar needs the inverse relation, and off-by-one errors cluster at month boundaries where the systems disagree. Verify the round trip returns your original date.

• The Samaritan and Assyrian calendars differ in year length and leap pattern, so a fixed-day offset — 365, 354, any memorized constant — drifts the Assyrian date badly. Convert the complete date so both leap rules apply.