Declaration of the Báb: This Holy Day commemorates May 23, 1844, when the Báb, the herald of the Bahá’í Faith, announced in Shiraz, Persia (now Iran), that He was the Herald of a new Messenger of God.
The Báb’s announcement in the middle of the 19th century came at a time when many Christians were expecting the return of Christ based on their reading of Biblical prophecy. Simultaneously, half way around the world, in the Middle East, many followers of Islam were also expecting their Promised One to appear.
That Promised One, the Báb declared, was destined to usher in the age of justice, unity and peace promised in Judaism, Christianity, Islam and all the other world religions. --NSA of the US