from the NY Times LENS page:
"Here it is: Earth, covered by stacks of thousands of virtual photographs corresponding in location to where they were taken by LENS readers at one moment in time: 15:00 U.T.C - Sunday 2 May 2010. . .
. . . Make no plans for the rest of the day!"
Image from www.thephotobrigade.com (with thanks to James Estrin of LENS)