As a result of Mars Rover interest, the The Planetary Society, along with Bill Nye "The Science Guy", have teamed up to bring you this web page that links to webcams that point at sundials. All the dials are built to the same specs (except the location of the solstice and equinox lines) and include the Mars-themed tagline "Two Worlds One Sun". This is mostly a project aimed at kids but the end result is pretty cool. Click on the Map of Live Sundials to look at all the active webcams.