The Calcutta Cup falls on Super Saturday in 2027: England v Scotland at Allianz Stadium on 13 March, kick-off 16:40.
This is the oldest fixture in international rugby and the reason the championship exists. The tournament was first played in 1883, among England, Ireland, Scotland and Wales, and was the first international rugby competition of any kind anywhere; England were thrown out of the 1888 and 1889 editions for refusing to join the international board. The two have contested the Calcutta Cup, a trophy belonging to no one else, since the nineteenth century, and it is played for inside the championship without being part of it.
A trophy contested by two teams inside a six-team tournament makes for an odd kind of match. Both sides can be out of the title race and the afternoon still matters more than any other in their season, which is why the form book is close to useless here and Scotland’s record at Twickenham is better than it has any right to be.
England play Scotland at Allianz Stadium on Saturday 13 March 2027, kicking off at 16:40. The fixture closes England’s championship on Super Saturday, the final round played across a single day, with Italy against Wales before it and Ireland against France after. Placing it last means the Calcutta Cup can decide the title as well as itself. Scotland have never won the championship in the Six Nations era, which has done nothing to reduce what this particular afternoon is worth to them.