Riḍván (Arabic: رضوان Riḍwán; Persian transliteration: Riḍván, Persian pronunciation: [ɾezvɒːn]) is a twelve-day festival in the Bahá'í Faith, commemorating Bahá'u'lláh's declaration that he was a Manifestation of God. In the Bahá'í Calendar, it begins at sunset on the 13th of Jalál, which translates to the 20th or 21st of April, depending on the date of the March equinox (exactly one month on the Gregorian calendar after the equinox). On the first, ninth and twelfth days of Ridván, work and school should be suspended."Ridván" means paradise, and is named for the Garden of Ridván outside Baghdad...