An Tir twelfth Evening (AT12N) is a medieval-themed, non-alcoholic New 12 months’s celebration held yearly by the Society for Inventive Anachronism (SCA) within the Kingdom of An Tir (which covers many of the US Higher Midwest).
The occasion presents a wide range of actions, together with feasts, dancing, tournaments, and workshops on medieval arts and sciences. AT12N is among the largest SCA occasions of the 12 months, with attendance usually exceeding 2,000 individuals.