People observe this holiday by visiting cemeteries and memorials. A National Moment of Remembrance takes place at 3 PM. Another tradition is to fly the U.S. Flag at half-staff from dawn until noon local time. In addition to remembrance, Memorial Day is also a time for picnics, family gatherings, and sporting events. One of the longest standing traditions is the running of the Indianapolis 500, which has been held in conjunction with Memorial Day since 1911.