Just about any scheme would make more sense than the completely random nonsense that we have now.<p>It's sad to see the gregorian calendar madness from over 400 years ago will probably even be carried into the space-age.<p><i>For example, an intercalation scheme that intercalates single days and is based on the mean Martian tropical year of 668.5921 days can be approximated closely with a cycle of 45 leap years in 76 years because 66845⁄76 ≈ 668.592105 and 0.5921 × 76 = 44.9996.</i><p>Easy, huh?<p>Well, here's more: <a href="http://en.wikipedia.org/wiki/Timekeeping_on_Mars" rel="nofollow">http://en.wikipedia.org/wiki/Timekeeping_on_Mars</a>