April 21st in history:
The Seattle World’s Fair opened on this date in 1962. April 21st of 1965 was the opening date of the second year of the New York World’s Fair.
Nobody saw Rosie Ruiz at the starting line of the Boston Marathon on April 21st, 1980, but many people saw her cross the finish line, seemingly setting a women’s record. Ruiz was disqualified after witnesses reported that she wasn’t seen running in the 26-mile race until about the last mile.