From what I understand, donations that counted towards any prizes, etc, ended today at noon. I'm sure you can still donate, but it won't count towards any top placements.
The email I received today made it sound like only 1st 2nd and 3rd placement was determined by 12pm est, as for the bracelet, talli counter and top donation shirts will still be awarded until the event start.
So guys keep the donations coming
http://www.firstgiving.com/fundraiser/danielsimaan/KnottsBerryFarm2013 (If you're feeling up to it heh)