The Day of the Covenant, observed on November 26, is a Bahá'í holy day that honors the agreement made between Bahá'u'lláh and his followers regarding the establishment of his son, `Abdu'l-Bahá, as the authorized interpreter and leader of the Bahá'í Faith after his passing. This day celebrates unity and the continuity of guidance within the Bahá'í community, though it is not observed as a work-free holy day.