I quote this out of interest more than an argument, from http://marsrovers.jpl.nasa.gov/mission/status.html
"The team has been watching Opportunity's power very carefully. It seems that Opportunity is losing some of the power boost it received during the last cleaning event. The solar array wake up time has been getting later each day and is currently 9:48 Mars Local Solar Time. The team has been planning accordingly, taking steps to preserve power where appropriate." I find it fascinating that the only bunch of humans currently operating on a planet other than Earth find it compelling to use local Solar Time. Peter.
