Federal guidelines state the flag should be flown at half staff at the following dates/times:
•May 15 – Peace Officers Memorial Day
•Last Monday in May – Memorial Day (until noon)
•July 27 – Korean War Veterans Day
•September 11 – Patriot Day
•December 7 – Pearl Harbor Remembrance Day
•For 30 days – Death of a president or former president
•For 10 days – Death of a vice president, Supreme Court chief justice/retired chief justice, or speaker of the House of Representatives.
•From death until the day of interment – Supreme Court associate justice, member of the Cabinet, former vice president, president pro-tempore of the Senate, or the majority and minority leaders of the Senate and House of Representatives. Also for federal facilities within a state or territory, for the governor.
•On the day after the death – Senators, members of Congress, territorial delegates or the resident commissioner of the commonwealth of Puerto Rico