National POW-MIA Recognition Day, which honors the sacrifices made by members of the armed forces held as prisoners of war or listed as missing in action, is Friday, Sept. 20.
Postal Service facilities are required to display the POW-MIA flag this day. The flag must fly below the U.S. flag, and both flags should be flown at full staff.
For additional information, refer to the Postal Service’s Administrative Support Manual, which explains the organization’s guidelines on U.S. flag display and maintenance, as well as the requirements for flying the POW-MIA flag.