April 21

He is the Ever-Abiding. It is the Festival of Ridván, the vernal season wherein the Beauty of the All-Glorious was revealed betwixt earth and heaven. In this wondrous Day the gates of Paradise were flung open before the faces of all people, at the behest of Him Who is the All-Praised, and the outpourings of divine mercy rained down from the clouds of celestial favour upon His countless embodiments and manifestations in the world of being. 

- Baha’u’llah  (‘Days of Remembrance’)