Long a go I made a weeks format for version 1.4, still a one without Ajax. (and a clumsy way of showing the name of the day, now I see it again )
For 1.9.10 I recently made a new clone for days, starting with weeks.
taking 52 weeks for a start, you end up with 7 full weeks: 49 days, like the movie..
(well, 52 days really, of course)
If you compare my 1.9 formatWEEKS.php with my format.php for days you can see which variables you have to change and do the same for the 2.0 format.
So, I hope to see your 49 days format for Moodle 2.0 very soon
