Flying the American Flag

I got a postcard in the mail from a local real estate agent, and on it was a helpful list of flag-flying days. Some of these will already be on iCal’s U.S. Holidays calendar, but I decided to make a separate calendar you can download for iCal or any other calendar app which supports a .ics file. The dates are:
+ New Year’s Day (January 1)
+ Inauguration Day (January 20)
+ Martin Luther King’s Birthday (3d Monday in January)
+ Lincoln’s Birthday (February 12)
+ Washington’s Birthday (February 22)
+ Washington’s Birthday (Observed) (3d Monday in February)
+ Patriots Day (April 19)
+ National Day (2d Sunday in May)
+ Memorial Day (Last Monday in May, fly flag at half-staff until noon)
+ Flag Day (June 19)
+ Independence Day (July 4)
+ Labor Day (1st Monday in September)
+ Constitution Day (September 17)
+ Columbus Day (October 12)
+ Navy Day (October 27)
+ Veteran’s Day (November 11)
+ Thanksgiving Day (4th Thursday in November)
+ Christmas Day (December 25th)
I did not include Easter, since Easter Sunday varies from year to year. The flag can be flown on Easter. The flag should also be flown on election days, can be flown on state and local holidays, a State’s Birthday, and any days as proclaimed by the President of the United States.
I welcome any additions or corrections.