Scots and non-Scots are welcome when the Scottish Society celebrates National Tartan Day, April 6, with a potluck supper at the Federated Church in Edgartown. There is no charge.

Entertainment will be a mini-concert by Joe Keenan, whose performance will include the well-known Scottish traditional tunes.

A special tribute will be paid to James Naismith, who invented the game of basketball. Mr. Naismith came to the Vineyard one summer from his base at the YMCA in Springfield, Mass., which now houses the James Naismith Hall of Fame.

Members of the society were instrumental in arranging for the passage of the 1998 U.S. Senate Resolution designating April 6 of each year as National Tartan Day. The date was chosen because on that day in 1320 a letter was sent to the Pope, asking him to recognize Scotland’s independence and to acknowledge Robert the Bruce as the country’s lawful king.

All are welcome to this free celebration on April 6 beginning at 6 p.m. Bring you own potluck supper. To anticipate the attendance, guests are asked to telephone society president Madeline Fisher at 508-627-7736.