The Six Nations Championship, held every year in February and March, is Ireland's only annual tournament. It is contested against England, France, Italy, Scotland and Wales. Ireland was a member of the inaugural Home Nations in 1883, with France and Italy joining later to form the Five and Six Nations respectively. Ireland won their first championship in 1894, also winning the Triple Crown. Ireland's first Grand Slam occurred in the 1948 season and their second in the 2009 season. In total Ireland have been outright champions on fourteen occasions following their title in the 2018 Six Nations Championship and have nine shared wins. Ireland won their third ever Grand Slam in the 2018 Six Nations Championship with a 24–15 win over England at Twickenham on March 17 (St Patrick's Day).