What day of the week was February 21, 1999?

The day of the week February 21st, 1999 fell on was a Sunday.

Gertrude B. Elion the American biochemist and pharmacologist, Nobel Prize laureate (b. 1918) died on this day in 1999. As did Ilmari Juutilainen the Finnish soldier and pilot (b. 1914) , Wilmer Mizell the American baseball player (b. 1930) .