What Have We Learned, Charlie Brown? A Tribute is the 26th prime-time animated television special based upon the comic strip Peanuts, by Charles M. Schulz, who introduced the special. It originally aired on the CBS network on May 30, 1983, Memorial Day in the United States, and one week prior to the 39th anniversary of the D-Day Invasion. It was rebroadcast on CBS on May 26, 1984 and again on May 29, 1989.