After WWI, the holiday was adjusted to honor all Americans who had died fighting in any war, not just the Civil War. In 1971 with congressional approval of the National Holiday Act, it became a federal holiday to be celebrated the last Monday in May. In December 2000, a "National Moment of Remembrance" resolution was passed. This addition marked 3 . local time as a point to "voluntarily and informally observe in their own way a Moment of remembrance and respect, pausing from whatever they are doing for a moment of silence or listening to 'Taps.'"