- January 1, 1979
- January 2, 1979
- January 3, 1979
- January 4, 1979
- January 5, 1979 (The day that the documentary Happy Birthday, Charlie Brown first aired)
- January 6, 1979
- January 7, 1979
- January 8, 1979
- January 9, 1979
- January 10, 1979
- January 11, 1979
- January 12, 1979 (This strip is adapted as the segment "Song" in It's an Adventure, Charlie Brown)
- January 13, 1979
- January 14, 1979 (This strip is adapted in the episode "The Winter Games" from the 2014 French TV series Peanuts)
- January 15, 1979
- January 16, 1979
- January 17, 1979
- January 18, 1979
- January 19, 1979
- January 20, 1979
- January 21, 1979
- January 22, 1979
- January 23, 1979
- January 24, 1979
- January 25, 1979
- January 26, 1979
- January 27, 1979
- January 28, 1979
- January 29, 1979
- January 30, 1979
- January 31, 1979
← December 1978 | February 1979 → |