Richard Nixon actually said...
Now, Therefore, I, Richard Nixon, President of the United States of America, do hereby designate Memorial Day, Friday, May 30, 1969, as a day of prayer for permanent peace, and I designate the hour beginning in each locality at 11 o'clock in the morning of that day as a time to unite in such prayer.
Context
Proclamation 3912—Prayer for Peace, Memorial Day, 1969
05/15/1969