Jennifer Trosper, mission manager at JPL for the Mars rover Spirit, has converted to the 24-hour, 39-minute Martian day. What her days are like, from the MIT alumni site. Tip from Periapsis.org, which also found that the daytime temperatures on Mars have been warmer than those in Buffalo, Hartford and other cities in the Northeast.

NASA says, by the way, that by Saturday morning both rovers will be out and around on Martian soil.