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Credit: NASA/JPL/Cornell

Transit of Phobos across the Sun as seen from Mars Exploration Rover Opportunity on March 12 2004. Times in the table below are Martian local solar time as given by JPL.

Original filename: http://marsrovers.jpl.nasa.gov/gallery/all/1/p/047/1P132370911ESF05AMP2672R8M1.JPG [4]

The timestamp built into the filename is 132370911 seconds since the J2000.0 epoch ([5]), or March 12 2004 13:40:46.816 UTC (the three-decimal-digit precision is of course not real).

• Opportunity image gallery: Sol 47 archive copy at the Wayback Machine (small images of the March 12 2004 transit are near the bottom of the page).