 CONT: The movie starts on a Friday and they say that the asteroid  will hit in 18 days, which would bring us to a Tuesday. The shuttle  is launched on a Tuesday evening at 6:30pm. It takes about an hour  (67min) to get to MIR, 60 hours to get to the moon, 12 min  slingshot, 8 hours on the asteroid and about 4 hours (3:57) to earth  after zero barrier. This timeline projects the asteroid hitting  earth Friday evening around 8pm. No where near Tuesday evening.