Ridvan
<p ><b>Riḍván</b> (<a href="https://en.wikipedia.org/wiki/Arabic_language" title="Arabic language" >Arabic</a>: رضوان Riḍwán; <a href="https://en.wikipedia.org/wiki/Persian_language" title="Persian language" >Persian</a> <a href="https://en.wikipedia.org/wiki/Bah%C3%A1%27%C3%AD_orthography" title="Bahá'í orthography" >transliteration</a>: Riḍván, <small>Persian pronunciation: </small><a href="https://en.wikipedia.org/wiki/Help:IPA_for_Persian" title="Help:IPA for Persian" >[ɾezvɒːn]</a>) is a twelve-day festival in the <a href="https://en.wikipedia.org/wiki/Bah%C3%A1%27%C3%AD_Faith" title="Bahá'í Faith" >Bahá'í Faith</a>, commemorating the commencement of <a href="https://en.wikipedia.org/wiki/Bah%C3%A1%27u%27ll%C3%A1h" title="Bahá'u'lláh" >Bahá'u'lláh</a>'s prophethood. It begins at <a href="https://en.wikipedia.org/wiki/Sunset" title="Sunset" >sunset</a> on April 20 and continues until sunset, May 2. On the first (April 21), ninth (April 29) and twelfth days of Ridván (May 2), work and school should be suspended.<sup id="cite_ref-esslemont_1_1-0" class="reference" ><a href="https://en.wikipedia.org/wiki/Ridv%C3%A1n#cite_note-esslemont_1-1" >[1]</a></sup>
"Ridván" means <a href="https://en.wikipedia.org/wiki/Paradise" title="Paradise" >paradise</a>, and is named for the <a href="https://en.wikipedia.org/wiki/Garden_of_Ridv%C3%A1n,_Baghdad" title="Garden of Ridván, Baghdad" >Garden of Ridván</a> outside <a href="https://en.wikipedia.org/wiki/Baghdad" title="Baghdad" >Baghdad</a>, where Bahá'u'lláh stayed for twelve days after the <a href="https://en.wikipedia.org/wiki/Ottoman_Empire" title="Ottoman Empire" >Ottoman Empire</a> exiled him from the city and before commencing his journey to <a href="https://en.wikipedia.org/wiki/Constantinople" title="Constantinople" >Constantinople</a>.<sup id="cite_ref-rob1_1_2-0" class="reference" ><a href="https://en.wikipedia.org/wiki/Ridv%C3%A1n#cite_note-rob1_1-2" >[2]</a></sup>
It is the most holy Bahá'í festival, and is also referred to as the "Most Great Festival" and the "King of Festivals".</p>