The Bahá'í calendar sets aside special days during the year for celebrations and commemorations of holy events in the history of the Faith. The major holy days and festivals are:
Naw-Ruz, the Bahá'í new year, on the spring equinox (March 21).
Ridvan, a twelve-day festival from April 21 to May 3. Special celebrations are held on the first, ninth and twelfth days of Ridvan.
Declaration of the Bab (May 23)
Ascension of Baha'u'llah (May 29)
Martyrdom of the Bab (July 9)
Birth of the Bab (October 20)
Birth of Baha'u'llah (November 12)
Day of the Covenant (November 25)
Ayyam'i'ha, a three- or four-day festival in the final days of April, before the Fast (during the Bahá'í month of Ala).