For those that didn't notice. Per USC: Title 4, Chapter 1
The flag should be displayed on all days, especially on New
Year's Day, January 1; Inauguration Day, January 20; Martin Luther
King Jr.'s birthday, third Monday in January; Lincoln's Birthday,
February 12; Washington's Birthday, third Monday in February;
Easter Sunday (variable); Mother's Day, second Sunday in May; Armed
Forces Day, third Saturday in May; Memorial Day (half-staff until
noon), the last Monday in May; Flag Day, June 14; Father's Day,
third Sunday in June; Independence Day, July 4; National Korean War
Veterans Armistice Day, July 27; Labor Day, first Monday in
September; Constitution Day, September 17; Columbus Day, second
Monday in October; Navy Day, October 27; Veterans Day, November 11;
Thanksgiving Day, fourth Thursday in November; Christmas Day,
December 25; and such other days as may be proclaimed by the
President of the United States; the birthdays of States (date of
admission); and on State holidays.