The Celebration (Danish: Festen) is a 1998 Danish black comedy-drama film directed by Thomas Vinterberg and produced by Nimbus Film. It tells the story of a family gathering to celebrate their patriarch's 60th birthday, during which a family secret is revealed. Festen was the first film of the Dogme 95 movement, which was created by Vinterberg and his fellow Danish director Lars von Trier. The movement preferred simple and analog production values to allow for the highlighting of plot and performance.
https://en.wikipedia.org/wiki/The_Celebration