- December 1, 1977
- December 2, 1977
- December 3, 1977
- December 4, 1977
- December 5, 1977
- December 6, 1977
- December 7, 1977
- December 8, 1977
- December 9, 1977
- December 10, 1977
- December 11, 1977 (This strip is adapted in the segment "Happy Holidays from Snoopy" of the 2002 special Charlie Brown's Christmas Tales)
- December 12, 1977 (Ending of a storyline which was later adapted as the segment "Gold Stars" of the 1983 The Charlie Brown and Snoopy Show episode "Snoopy's Football Career" and in the book Everybody Gets Gold Stars But Me!)
- December 13, 1977
- December 14, 1977
- December 15, 1977
- December 16, 1977 (Beethoven's birthday)
- December 17, 1977
- December 18, 1977
- December 19, 1977
- December 20, 1977
- December 21, 1977
- December 22, 1977
- December 23, 1977
- December 24, 1977
- December 25, 1977
- December 26, 1977
- December 27, 1977
- December 28, 1977
- December 29, 1977
- December 30, 1977
- December 31, 1977 (This strip ends the first full year of Peanuts without Patty appearing)
← November 1977 | January 1978 → |