Name: Memorial Day

When: Last Monday in May

Where: USA

For what: Memorial Day is a day of remembering the men and women who died while serving in the United States Armed Forces.

How to observe: Many people visit cemeteries and war memorials. Many volunteers place an American flag on each grave in national cemeteries.

When: Dec 7

Where: USA

For what: National Pearl Harbor Remembrance Day is to remember and honor all those who died in the attack on Pearl Harbor on December 7, 1941.

How to observe: It is a tradition to fly the flag of the United States at half-staff until sunset in honor of dead patriots. Some organizations hold special events in memory of those killed or injured at Pearl Harbor.