Picnic Day (UC Davis)
Picnic Day is an annual open house event held in April at the University of California, Davis. Picnic Day was first held on May 22, 1909. It has grown to be what is believed to be the largest student-run event in the United States, typically drawing more than 50,000 visitors. In 2009, around 125,000 visitors attended Picnic Day – a new attendance record.
In 2020, Picnic Day 106 was cancelled due to the COVID-19 pandemic. The in-person event returned in 2022 with Picnic Day 108.