What is what holiday is may 27th?

May 27th is a day commonly known as Memorial Day in the United States. It is a federal holiday dedicated to honoring and remembering the men and women who have died while serving in the country's armed forces. Memorial Day is observed on the last Monday of May each year and is marked by various ceremonies, parades, and tributes to fallen soldiers. It also unofficially marks the beginning of the summer season for many Americans.