Memorial Day (or less commonly called Decoration Day) is a federal holiday in the United States for remembering and honoring people who died while serving in the United States Armed Forces.[1] The holiday, which is currently observed every year on the last Monday of May, was most recently held on May 28, 2018. Memorial Day was previously observed on May 30 from 1868 to 1970.

Memorial Day is considered the unofficial start of the summer vacation season in the United States, while Labor Day marks its end on the first Monday of September.

Many people visit cemeteries and memorials on Memorial Day, particularly to honor those who died in military service. Many volunteers place an American flag on each grave in national cemeteries.

Two other days celebrate those who serve or have served in the U.S. military: Veterans Day, which celebrates the service of all U.S. military veterans; and Armed Forces Day, a minor U.S. remembrance celebrated earlier in May, specifically honoring those currently serving in the U.S. military.

In 2019, Memorial Day falls on May 27, 2019.