Riḍván (رضوان ; Persian transliteration: Rezván, ɾezvɒːn) is a twelve-day festival in the Baháʼí Faith, commemorating Baháʼu'lláh's declaration that he was a Manifestation of God. In the Baháʼí 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). In 2023 it will be celebrated on 21 April. 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, where Baháʼu'lláh stayed for twelve days after the Ottoman Empire exiled him from the city and before commencing his journey to Constantinople.
It is the holiest Baháʼí festival, and is also referred to as the "Most Great Festival" and the "King of Festivals".
In 1844 Siyyid ʻAlí-Muhammad of Shiraz proclaimed that he was the "Báb" ("Gate"), after a Shiʻa religious concept. His followers were therefore known as Bábís. The Báb's writings introduced the concept of "He whom God shall make manifest", a Messianic figure whose coming, according to Baháʼís, was announced in the scriptures of all of the world's great religions.
Baháʼu'lláh claimed that his mission as the Promised One of the Báb, was revealed to Him in 1852 while imprisoned in the Síyáh-Chál in Tehran, Iran. After his release from the Síyáh-Chál, Baháʼu'lláh was banished from Persia, and he settled in Baghdad, which became the centre of Bábí activity. Although he did not openly declare this prophetic mandate, he increasingly became the leader of the Bábí community.
Baháʼu'lláh's rising prominence in the city, and the revival of the Persian Bábí community, gained the attention of his enemies in Islamic clergy and the Persian government. They were eventually successful in having the Ottoman government summon Baháʼu'lláh from Baghdad to Constantinople (present-day Istanbul).
Garden of Ridván, Baghdad
Before Baháʼu'lláh left for Constantinople, many visitors came to visit him.