They will remain open until 9:00 pm US EST, Monday, November 10th. Assignments will go out on Tuesday, November 11th.
The deadline for uploading stories for Yuletide 2008 will be Saturday, December 20th at 9:00 pm US Eastern time.
The deadline for defaulting without penalty is 11:59 pm EST on Sunday, December 7th. That gives you not quite four weeks! If you default after this date, you may be banned. If you default without notice, you will be banned.