- December 1, 1983
- December 2, 1983 (This strip is adapted in It's Christmastime Again, Charlie Brown)
- December 3, 1983 (The day that the episode "It's That Team Spirit, Charlie Brown" from The Charlie Brown and Snoopy Show first aired)
- December 4, 1983
- December 5, 1983
- December 6, 1983
- December 7, 1983
- December 8, 1983
- December 9, 1983
- December 10, 1983 (The day that the episode "Lucy Loves Schroeder" from The Charlie Brown and Snoopy Show first aired)
- December 11, 1983
- December 12, 1983
- December 13, 1983
- December 14, 1983
- December 15, 1983 (Beginning of a storyline which was later adapted in It's Christmastime Again, Charlie Brown and as the segment "The Play" of the 1985 The Charlie Brown and Snoopy Show episode "Sally's Sweet Babboo")
- December 16, 1983 (The first reference to Harold Angel)
- December 17, 1983
- December 18, 1983 (This strip is adapted as the episode "Hissez le menu" from the 2014 French TV series Peanuts)
- December 19, 1983
- December 20, 1983
- December 21, 1983
- December 22, 1983
- December 23, 1983
- December 24, 1983 (Harold Angel's first appearance)
- December 25, 1983
- December 26, 1983
- December 27, 1983
- December 28, 1983
- December 29, 1983
- December 30, 1983 (This strip is adapted in Happy New Year, Charlie Brown!)
- December 31, 1983
| ← November 1983 | January 1984 → |