Bahá'u'lláh's family joined him in the garden. Work is suspended. Riḍván (Arabic: رضوان, romanized: Riḍwān, lit. 'Paradise'; Bahá'í orthography: Rezván, 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 21 April, depending on the date of the March equinox (exactly one month on the Gregorian calendar after the equinox). In 2026, it begins in the evening of 21 April. On the first, ninth and twelfth days of Ridván, work and school should be suspended. Riḍwān is named for the Garden of Ridván, Baghdad, where Bahá'u'lláh stayed for twelve days after the Ottoman Empire exiled him from the city before he journeyed to Constantinople. It is the holiest Bahá'í festival, and is also referred to as the "Most Great Festival" and the "King of Festivals". Wiki link Dates computed on the Badí' calendar from Tehran's equinox, sunsets and new moons (before 2015, the West's fixed dates). Text: Wikipedia (CC BY-SA).