After a 25-meter drive on Sol 1578, MSL is surrounded by more dark sand than usual, but there is enough rock exposed that we had a lot of science targets to choose from today.  Due to the US holiday on Monday, we are planning 4 sols today.  The first sol will include only REMS atmospheric observations while the rover recharges after the SAM methane measurement the night before, but the rest of the plan is packed!  Sol 1580 starts with ChemCam passive (no laser) measurements of the sky and calibration targets.  Then we’ll use the laser to zap rock targets “Oak Bay” and “Rockport” and take Right Mastcam images of them.  Mastcam will also acquire a mosaic of bedrock exposures just west of the rover, measure dust in the atmosphere, and take another image of the rover deck.  Later that afternoon, ChemCam and Right Mastcam will observe disturbed sand at “Kennebec,” an undisturbed ripple called “Spruce Top,” and bedrock targets named “Traveler” and “Mars Hill.”  Right Mastcam will also acquire a 3×1 mosaic of a more distant outcrop dubbed “Ogler Point.”