I posted my comments on the 2233 and 2258 pages before I noticed this article, but what the heck, I'll repost here since it's the most relevant article.
According to Star Trek co-writer Roberto Orci, the stardates used in the film are YYYY.DDD, so for example, 2233.04 would be January 4, 2233, while 2258.42 would be February 11, 2258. His explanation can be found at the following page, message #935.  --Randy1012 09:33, 4 July 2009 (UTC)
Yes, but this is the same man who wrote a script allowing Spock-Prime to see Vulcan with the naked eye from the surface of a planet that seems to be in another solar system, and has a supernova in one system destroying a planet several light-years away. I figure that some of what he says can be taken with a grain of salt. The math is a lot easier this way. IcarusPhoenix 14:39, 4 July 2009 (UTC)
There really isn't any math involved. I just go to Wikipedia.com and look up some random day, and it mentions which day of the year out of 365 it is (or 366 if it's a leap year). --Randy1012 18:56, 4 July 2009 (UTC)
And therein lies the problem - .60 is 1 March... except for once every four years, in which case, it's 29 February, and every day thereafter is different for just that year - a date should be the same every single year. IcarusPhoenix 23:39, 4 July 2009 (UTC)
GM/AGMs have decided to go with the YYYY.MDD methodology. However, to reconcile the Orci-method, I am going to edit this article to say that the system was changed sometime around 2300 to conform to the Gregorian calendar and prevent constant date changed every four years. I will also go ahead and fix articles using the old date system later today. IcarusPhoenix 19:43, 7 July 2009 (UTC)