'Abdu'l-Baha, in his Traveller's Narrative, in his effort to make it appear that Baha had been the leading figure in the Babi Movement from an earlier time, "deliberately and purposely antedated the Manifestation," says Dr. Browne, stating that this important declaration was made by Baha in Baghdad in A. D. 1852, fourteen years earlier than it actually occurred!
The modern Baha'is have fixed the date as April 21, 1863, - which is only three or four years too early (Baha'u'llah and the New Era, Esslemont, p. 36.) See also Journal Royal Asiatic Society, April, 1892, pp. 304-306.