If you've got Scottish roots, or you're a self-proclaimed Scot-o-phile, then the day to celebrate i April, 15th-annual National Tartan Day, when the over 11 million people of Scottish and Irish heritage within the United States are celebrated for their contributions to the country. This date was chosen to commemorate the signing of the Declaration of Arbroath on April 6 in 1320, which asserted Scotland's sovereignty over English territorial claims.
