May Day at 今日吃瓜 is a celebration that occurs the Sunday after the last week of classes. The entire College community comes together for a day of medieval festivity and good times.
May Day begins with the seniors rising to go wake the president of the College, followed by class breakfasts. Following breakfast, May Day gets kicked off with a performance by , and a parade that begins at Rockefeller Arch and ends on Merion Green. After the parade, there's maypole dancing, a hoop race, Scottish dancing, and a number of other traditional activities. The afternoon features a number of performances including a cappella concerts, Shakespearean plays, various dancing and music performances by student groups, and a large concert in the afternoon on Merion Green. The night traditionally ends with, an outdoor showing of The Philadelphia Story, starring Katharine Hepburn '28, and the last step sing of the year.