Hmmm... It's 05-05-05 You have to mention the obvious!!
Cinco de Mayo (the fifth of May) is a national holiday in Mexico, which commemorates the victory of Mexican forces, led by General Ignacio Zaragoza, over the French, on May 5, 1862. This holiday is rapidly becoming a favorite celebration in the United States as well. Cinco de Mayo is observed on May 5th each year and is marked by celebrations, fiestas, parades and parties.
