EarthDial project wants sundials in every time zone University Week

Both Spirit and Opportunity are equipped with sundials, referred to as Marsdials, that were largely designed and fabricated at the UW. They evolved from earlier missions that were to land on Mars in 2002 but were postponed. In examining the plans for those missions, Nye noticed a small square and post that were to be used as a kind of test pattern to calibrate the spacecraft