Ist wohl noch nicht ganz klar. Am wahrscheinlichsten ist derzeit wohl der 2. August, wenn das Ding tatsaechlich am 24. April startet.
Hartwig
For an April 24, 2009 launch date, the impact could come on around July 19, August 2 or August 16; or possibly as early as July 5. Of these possibilities, the July 19 and August 16 dates would likely be rejected because the Moon is too close to the Sun (too thin a crescent) to be observed high in a dark sky from Earth, and the July 5 date because it is too close to Full Moon (too much glare).