The Birth of the Báb is one of the two Twin Holy Birthdays celebrated by Bahá’ís, usually in October or November, based on the Bahá’í lunar calendar. The Báb, born in 1819 in Shiraz, Iran, was the forerunner and herald of Bahá’u’lláh, preparing the way for the Bahá’í Faith. The day is observed with joyful community gatherings, prayers, music, and reflection on the Báb’s life, mission, and message of spiritual renewal.