Not on this one, but on the full proclamation itself (2nd last paragraph):
NOW, THEREFORE, I, DONALD J. TRUMP, President of the United States of America, by virtue of the authority vested in me by the Constitution and the laws of the United States, do hereby proclaim January 22, 2021, as National Sanctity of Human Life Day.
Not on this one, but on the full proclamation itself (2nd last paragraph):
https://www.whitehousepool.report/proclamation-on-national-sanctity-of-human-life-day-2021/