36 U.S.C. § 118
National Aviation Day
The President may issue each year a proclamation—
(1)
designating August 19 as National Aviation Day;
(2)
calling on United States Government officials to display the flag of the United States on all Government buildings on National Aviation Day; and
(3)
inviting the people of the United States to observe National Aviation Day with appropriate exercises to further stimulate interest in aviation in the United States.
( Pub. L. 105–225 , Aug. 12, 1998 , 112 Stat. 1258 .)