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Badí' and Gregorian Date Conversion

The Gregorian and Bahá'í calendars use different methods of alignment to the solar year and so the date of which Naw-Rúz on the Gregorian calendar varies year between the 20 and 22 March.

The chart below shows the calculated Gregorian date on which  Naw-Rúz would have occurred, or will occur, from years 1 to 220 (1844 to 2064). The chart also shows the Váḥids (V) (every nineteen years) and year names (see information page for translations).

Please note that where most Bahá’ís used the calendar prior to the year 172 B.E., Naw-Rúz was considered to occur on March 21, regardless of when the Bahá equinox occurred, therefore most dates recorded by Bahá’ís prior to 172 B.E. will take March 21 as the first day of the year. The main exception to this might be historical records which may have counted Badí’ calendar days from the Vernal equinox in the northern hemisphere as observed in the Middle East, but those observations may still have differed from both the calculated date of Naw-Rúz below. All dates shown below after 172 B.E. have been confirmed in a document provided by the Universal House of Justice.

Although conversion is relatively easy, one has to account for both the varying start dates of Naw-Rúz on the Gregorian calendar and the fact that the Bahá’í day starts at sunset.


Converting a Bahá’í date to a Gregorian date

To convert from Badí' calendar to Gregorian calendar, first check the Gregorian date on which Naw-Rúz would have fallen in the relevant Bahá’í year. If it is 21 March then you can simply check the date against one of the calendars on this site to find the Gregorian equivalent, unless you are converting for an event that fell between sunset and midnight at the start of the Bahá’í day in which case the correct Gregorian date is one day earlier.

If Naw-Rúz would fall on 20 March then your date will fall one day earlier on the Gregorian calendar, or two days earlier if you are converting for an event between sunset and midnight, and if Naw-Rúz would fall on 22 March then your date will fall one day later on the Gregorian calendar, or on the same day as in the 172 B.E. calendar if converting for an event before midnight.


Converting a Gregorian date to a Bahá’í date

To convert from a Gregorian calendar date to a Badí' calendar date again requires first working out on which day Naw-Rúz would have fallen at the start of the Bahá’í year in which the date would fall.

If you are converting for an event between midnight and sunset in a Bahá’í year that started on 21 March then the correct date is the one matched in the 172 B.E. calendars on this site. If your your event fell after sunset that it is on the following Bahá’í day. If the Bahá’í year started on 20 March and the event was before sunset then the correct Bahá’í day is one day later than on the 172 B.E. calendar, if the event was after sunset then it will be two Bahá’í days later. For an event that fell in a year starting on 22 March, if it took place before sunset then it will be one day earlier than in 172 B.E. but if took place after sunset it will be on the same day as the date matches in the 172 B.E. Calendar.


Online Conversion Tools

A third party online conversion tool can be found at http://www.badi-calendar.com/calculator.php