The document summarizes the four seasons in the Middle Ages from the perspective of medieval Europeans based on images from the book "Les Très Riches Heures du Duc de Berry". Each season is associated with religious holidays and agricultural activities. Winter marked Christmas and purification rituals. Spring symbolized resurrection around Easter and the resumption of farming. Summer contained the longest day in June and harvest celebrations in August. Autumn was a time for accounting, harvests, and remembering the dead in November.