May Day is a holiday that celebrates the return of Spring. It usually takes place on May 1. Many people celebrate May Day with festivals or flowers. One of the oldest May Day traditions is the maypole. A maypole is a tree trunk or pole decorated with colorful ribbons. On May Day dancers hold the ribbons and dance around the pole. May Day is not an official holiday in the United States. In the United Kingdom it is a bank holiday that is celebrated on the first Monday in May. In some countries May Day is a holiday that honors workers, similar to Labor Day in the United States.