How 'bout April 4th, 1968 ?
MLK shot.
"How 'bout April 4th, 1968 ?"
After the film's [2001] premiere in April of 1968, Kubrick cut 19 minutes from the film, including parts of the Dawn of Man prologue, the Orion spaceship, Pool exercising in the centrifuge, and Pool returning with the AE-35 unit. Kubrick also inserted the title cards "Jupiter Mission 18 Months Later" and "Jupiter and Beyond the Infinite."
http://pages.prodigy.com/kubrick/kub2001.htm