Best tools for mapping rover "sol counts" to Earth calendar days Options

[craigmcg]

I am not a professional space explorer, but an avid follower. Frequently I see posts, images, etc. that refer to "sol xyz." I was wondering what the best tools out there are to map between a particular sol and a calendar date?

For example, has any one through about a google calendar that displayed the rover sols overlayed on a calendar? I realize that each sol would start at a different time each day, but that time could be displayed.

I am also familiar with:

http://msl-curiosity.requio.com/
http://www.giss.nasa.gov/tools/mars24/
https://itunes.apple.com/us/app/mars-clock/id532009322

But last I checked these mapped my current time on Earth to the current time of rovers on mars.

Oh, and I guess we also need to include Chang'e 3 sols now too...

[fredk]

This site gives you earth UT for each sol for MSL:
http://curiosityrover.com/sundata/