I updated the festivals on the Calendar page here: Calendar.
While double checking my sources, I found that I missed a few festivals and was also mistaken about two more. So I added and removed festivals.
It is always good to double-check sources.
And also, the folks at Amentet Neferet have come out with some books on the Ancient Egyptian Calendar.
Here is their latest release: Egyptian Religious Calendar: Great Year of Ra CDXIV-CDXV 2014
There have previous version from 2013 here: Egyptian Religious Calendar 2013