- October 1, 1980
- October 2, 1980 (Peanuts' 30th Anniversary)
- October 3, 1980
- October 4, 1980
- October 5, 1980
- October 6, 1980
- October 7, 1980
- October 8, 1980
- October 9, 1980
- October 10, 1980
- October 11, 1980
- October 12, 1980 (Snoopy appears as the World Famous Advice Columnist)
- October 13, 1980
- October 14, 1980
- October 15, 1980
- October 16, 1980
- October 17, 1980
- October 18, 1980
- October 19, 1980
- October 20, 1980
- October 21, 1980
- October 22, 1980
- October 23, 1980
- October 24, 1980 (The day that Life is a Circus, Charlie Brown first aired. Beginning of a storyline which was later adapted as the segment "Charlie Brown Lost!" of the 1983 The Charlie Brown and Snoopy Show episode "Snoopy: Man's Best Friend")
- October 25, 1980
- October 26, 1980
- October 27, 1980
- October 28, 1980
- October 29, 1980
- October 30, 1980
- October 31, 1980
| ← September 1980 | November 1980 → |