As seen on /.
http://www.giss.nasa.gov/tools/mars24/download.html
Gives you the time on Mars in various locales and sunclock like XEarth.
Agent Smith was right!: "I hate this place. This zoo. This prison. This reality, whatever you want to call it, I can't stand it any longer. It's the smell! If there is such a thing. I feel saturated by it. I can taste your stink and every time I do, I fear that I've somehow been infected by it."