YouTube broadcast of the NASA LRO-LCROSS Press Briefing held June 15, 2009. LCROSS starts at min 21: http://www.youtube.com/watch?v=D-GXjR_CZSE Visibility is discussed at min 28:  A June 18 launch gives a south pole impact on Oct. 9.   There are 369 archived NASA videos at the site, but news conferences are not necessarily systematically archived:  http://www.youtube.com/profile?user=NASAtelevision&view=videos The next NASA TV LCROSS broadcast is 9AM EDT tomorrow 6-16 on the science portion of the mission. - Kurt P.S. - Brian Day's Post on impact dates 5/26/2009: http://groups.google.com/group/lcross_observation/browse_thread/thread/eaac9... My "local circumstances" post 6-9 http://groups.google.com/group/lcross_observation/browse_thread/thread/6d571... Jim Mosher's visualization http://ltvt.wikispaces.com/LCROSS+Impact For 110W Longitude on Oct 9 11:30 (UT) (5:30 MDT, 4:30AST) October 9 11:30 UT (5:30 MDT) Salt Lake City Utah 2009-10-9   5h30m  ( TU +  -6h00m ) Sideral Time     :  5h15m Hour Angle       : 23h52m Azimuth          :+173°15' Altitude         :+74°57' ---> Sun alt -23 <----- Clear Skies - Kurt