Baha'i Day of the Year Calculator

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

1. 1

   Step 1

   Enter your date in the Baha'i calendar: day, month, and year.

2. 2

   Step 2

   We apply the Baha'i epoch and leap rules — year 1 = 1844 CE (Naw-Rúz ≈ 21 March).

3. 3

   Step 3

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

• 1

  This Baha'i Day of the Year follows Baha'i 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

  Watch century boundaries and very old dates in the Baha'i 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

  Before a Baha'i date goes into a booking or a flight, re-enter it in a second tool as a cross-check — pages like Baha'i Day of the Year apply fixed rules and cannot warn about a transposed input digit.

• Intercalation is system-private: the Baha'i year runs 365–366 days because leap months follow rules no other calendar shares, so a Gregorian every-fourth-year reflex misreads baha'i dates. Let the tool apply the baha'i rule to a day-of-year number.

• Historical dates shift with the calendar in force: the same day recorded under two systems lands years apart, and weekday claims only hold inside one system. Confirm the Baha'i basis of every date before comparing or quoting it.