- January 1, 1977
- January 2, 1977
- January 3, 1977
- January 4, 1977
- January 5, 1977
- January 6, 1977
- January 7, 1977
- January 8, 1977
- January 9, 1977 (Start of a series of three Sunday strips in which Snoopy repeats his Cheshire Beagle trick, adapted in the short "Snoopy's Trick" from the 1985 The Charlie Brown and Snoopy Show episode "Peppermint Patty's School Days")
- January 10, 1977 (This strip is adapted in the segment "Re-Run" from The Charlie Brown and Snoopy Show episode "Snoopy: Team Manager", in I Want a Dog for Christmas, Charlie Brown and in the episode "The Last of the Bunch" from the 2014 French TV series Peanuts)
- January 11, 1977
- January 12, 1977
- January 13, 1977
- January 14, 1977 (The second reference to Mr. Frick)
- January 15, 1977
- January 16, 1977
- January 17, 1977 (Beginning of a storyline which was later adapted in A Charlie Brown Celebration)
- January 18, 1977
- January 19, 1977
- January 20, 1977
- January 21, 1977 (Truffles, not seen since April 15, 1975, returns)
- January 22, 1977
- January 23, 1977 (This strip is adapted in the episode "Beware of the Dog" from the 2014 French TV series Peanuts)
- January 24, 1977
- January 25, 1977
- January 26, 1977
- January 27, 1977 (Sally calls Linus "her Sweet Babboo" for the first time)
- January 28, 1977
- January 29, 1977 (The final appearance of Truffles)
- January 30, 1977 (This strip is adapted in the segment "Sally at School" from The Charlie Brown and Snoopy Show episode "Chaos in the Classroom" and in the episode "Go to School!" from the 2014 French TV series Peanuts)
- January 31, 1977
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