“Riḍván 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.”
Must be time to work on some Ridvan poems.