USBN #162 April 1943 p1
In connection with the above [Celebration of Declaration of the Bab] he wishes me to add that the actual Celebration gathering, commemorative of that glorious occasion when the blessed Bab declared His spiritual Mission to the world in 1844 should take place exactly two hours and 11 minutes after sunset on May 22, in the Temple – naturally other Baha'i Centers all over the continent of America must hold their special Commemorative meeting at the same time. The delegates and friends must hold their special Commemorative meeting at that time. The date of the Convention must be fixed by your Assembly in such a manner that the gathering on May 22, 1944, will fall approximately in the middle of the Convention period.
It is certainly a wonderful occasion to look forward to!
(Through his Secretary, February 27, 1943)