National Maritime Day recognizes the maritime industry and the benefits it brings to the country. It honors ships and seafarers significant to the nation's history. (https://www.timeanddate.com/holidays/us/national-maritime-day)

Harvey Milk Day is observed in California on May 22 to celebrate the achievements of Harvey Milk, a gay rights activist. (https://www.timeanddate.com/holidays/us/harvey-milk-day)