Illinois State House District 74 issued the following announcement on Sept. 20
The United States’ National POW/MIA Recognition Day is observed across the nation on the third Friday of September each year. Many Americans take the time to remember those who were prisoners of war (POW) and those who are missing in action (MIA), as well as their families.
The United States Congress passed a resolution authorizing National POW/MIA Recognition Day to be observed on July 18, 1979. It was observed on the same date in 1980 and was held on July 17 in 1981 and 1982. It was then observed on April 9 in 1983 and July 20 in 1984. The event was observed on July 19 in 1985, and then from 1986 onwards the date moved to the third Friday of September. The United States president each year proclaims National POW/MIA Recognition Day.
Below are the latest numbers from the Defense POW/MIA Accounting Agency (updated September 20, 2019):
As this map shows, at present, more than 81,000 Americans remain missing from WWII, the Korean War, the Vietnam War, the Cold War, and the Gulf Wars/other conflicts. Out of the more than 81,000 missing, 75% of the losses are located in the Indo-Pacific, and over 41,000 of the missing are presumed lost at sea (i.e. ship losses, known aircraft water losses, etc.).
Original source can be found here.