One of the 29 commemorative flags commemorates Flag DayYes, the college town that allows its commemorative flags to fly only once every five years to commemorate the most horrendous attack on American soil in our entire 237 year history proudly flies them annually for Flag Day. And Labor Day.
Flag Day reminds me of the hack writer who thinks leading with the word "interestingly" will make the follow up material more interesting. If something is truly interesting the readers will figure that out quick enough if you simply let the story speak for itself.
In other words, every day should be Flag Day.