Technically Zero. While the first episode was alternately called The Simpsons Christmas Special it is simply the first episode, it is not a separate special created for the Simpsons.
As of the 25th Season, there has been 12 Christmas themed episodes, but those are also just regular episodes, not specials.
The first Simpsons Christmas episode was actually the series' very first episode, which aired on December 17, 1989.
There have been 19 Treehouse of Horror Specials.
The Office Christmas specials was created on 2003-12-26.
The True Meaning of Christmas Specials was created in 2002.
He has done 4 Christmas specials and one Easter special, with three more in 2009.
Treehouse of horror 1 - 15
All Christmas specials are on Christmas day.
Pn their very first Christmas the Simpsons got their dog, Santa's Little Helper
The Simpsons - 1989 Simpsons Christmas Stories 17-9 is rated/received certificates of: Argentina:Atp USA:TV-PG (1997-Present)
Doctor Who Best of Specials - 2011 Best of the Christmas Specials 1-4 SUSPENDED was released on: USA: 24 December 2011
Many hotels and resorts offer vacation specials for the Christmas Holiday's. Packages vary place by place, but often include a discount if multiple rooms are books, or booked for a prolonged period of time.
Some good Christmas Holiday vacation specials: Polar Express Train rides, Orlando Christmas events, NYC Christmas Carroll on Broadway and/or Disney World Christmas vacation packages.