May is the fifth month of the year in the Julian and Gregorian calendars and has 31 days. It is a month of spring in the Northern Hemisphere and autumn in the Southern Hemisphere. May is named after the Greek goddess Maia, who was identified with the Roman era goddess of fertility, Bona Dea. In the Catholic tradition, May is the Month of the Blessed Virgin Mary.

Late May typically marks the start of the summer vacation season in the United States (Memorial Day) and Canada (Victoria Day) that ends on Labor Day, the first Monday of September. There are several awareness months celebrated in May, including Asian American & Pacific Islander Heritage Month, Mental Health Awareness Month, Jewish American Heritage Month, National Clean Air Month, and No Mow May.

In summary, May is the fifth month of the year, has 31 days, and is named after the Greek goddess Maia. It is a month of spring in the Northern Hemisphere and autumn in the Southern Hemisphere.