Richard Nixon actually said...
Holiday means the first day of January, the third Monday of February, the last Monday of May, the fourth day of July, the first Monday of September, the second Monday of October, the fourth Monday of October, the fourth Thursday of November, the twenty-fifth day of December, or any other calendar day designated as a holiday by Federal statute or Executive order.
Context
Executive Order 11582—Observance of Holidays by Government Agencies
02/10/1971