I would never have known, but then I saw that Yeshiva Son was wishing everyone a "happy loyalty day" on his facebook page. It turns out that by Presidential Proclamation, Obama declared May 1 - otherwise known as May Day - to be "Loyalty Day."
.... On this day, let us reaffirm our allegiance to the United States of America, our Constitution, and our founding values.
NOW, THEREFORE, I, BARACK OBAMA, President of the United States of America, do hereby proclaim May 1, 2012, as Loyalty Day. This Loyalty Day, I call upon all the people of the United States to join in support of this national observance, whether by displaying the flag of the United States or pledging allegiance to the Republic for which it stands.
IN WITNESS WHEREOF, I have here unto set my hand this first day of May, in the year of our Lord two thousand twelve, and of the Independence of the United States of America the two hundred and thirty-sixth.
Since I missed it, do I have to wait another year to pledge my allegiance?