Andrew was used on the seal of the Guardians of Scotland who assumed control of the kingdom during the subsequent interregnum. Use of a simplified symbol associated with Saint Andrew, the saltire, has its origins in the late 14th century; the Parliament of Scotland decreeing in 1385 that Scottish soldiers should wear a white Saint Andrew's Cross on the front and back of their tunics. Use of a blue background for the Saint Andrew's Cross is said to date from at least the 15th century. Since 1606 the saltire has also formed part of the design of the Union Flag. There are numerous other symbols and symbolic artefacts, both official and unofficial, including the thistle, the nation's floral emblem (celebrated in the song, The Thistle o' Scotland), the Declaration of Arbroath, incorporating a statement of political independence made on 6 April 1320, the textile pattern tartan that often signifies a particular Scottish clan and the royal Lion Rampant flag. Highlanders can thank James Graham, 3rd Duke of Montrose, for the repeal in 1782 of the Act of 1747 prohibiting the wearing of tartans. Although there is no official national anthem of Scotland, Flower of Scotland is played on special occasions and sporting events such as football and rugby matches involving the Scotland national teams and since 2010 is also played at the Commonwealth Games after it was voted the overwhelming favourite by participating Scottish athletes. Other currently less popular candidates for the National Anthem of Scotland include Scotland the Brave, Highland Cathedral, Scots Wha Hae and A Man's A Man for A' That. St Andrew's Day, 30 November, is the national day, although Burns' Night tends to be more widely observed, particularly outside Scotland. In 2006, the Scottish Parliament passed the St Andrew's Day Bank Holiday (Scotland) Act 2007, designating the day an official bank holiday. Tartan Day is a recent innovation from Canada. The national animal of Scotland is the unicorn, which has been a Scottish heraldic symbol since the 12th century. Cuisine Scottish cuisine has distinctive attributes and recipes of its own but shares much with wider British and European cuisine as a result of local and foreign influences, both ancient and modern. Traditional Scottish dishes exist alongside international foodstuffs brought about by migration. Scotland's natural larder of game, dairy products, fish, fruit, and vegetables is the chief factor in traditional Scots cooking, with a high reliance on