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.

Ridwan is named for the Garden of Ridván, Baghdad, where Bahá'u'lláh stayed for twelve days after the Ottoman Empire exiled him from the