Next week. I think a week from tonight, but not 100%.
Here we go:
“A Charlie Brown Christmas” ABC, Dec. 8 @ 8 p.m. and Dec. 15 @ 8 p.m. The classic, bumped a week because of a Presidential address.
http://blogs.courant.com/roger_catlin_tv_eye/2009/12/christmas-tv-special-roundup.html