Original sentence: On March 7, 2009, Opportunity first saw the rim of Endeavour after driving about 3.2 kilometers (2 miles) since it left Victoria in August of 2008
Edited sentence: On March 7, 2009 (sol 1,820), Opportunity first saw the rim of Endeavour after driving about 3.2 kilometers (2 miles) since it left Victoria in August of 2008