This post is 650 years after the actual event! (Blogging software can’t cope with these older dates!)
The Declaration of Arbroath was written in Latin and promulgated on April 6th, 1320, at Arbroath Abbey (on the east coast of Scotland, just north of St. Andrews, the home of golf). Its purpose was to convince Pope John XXII, resident in Avignon, France, that Scotland was an independent country.
US Senate Resolution Number 155 of March 20th 1998, recognises April 6th in the USA as “Tartan Day”