- May 1, 1973
- May 2, 1973 (This strip is adapted in the song "My New Philosophy" from the stage musical You're a Good Man, Charlie Brown)
- May 3, 1973
- May 4, 1973
- May 5, 1973
- May 6, 1973
- May 7, 1973
- May 8, 1973
- May 9, 1973
- May 10, 1973
- May 11, 1973
- May 12, 1973
- May 13, 1973
- May 14, 1973
- May 15, 1973
- May 16, 1973 (Peppermint Patty's famous line from the last panel would be adapted in the TV special A Charlie Brown Thanksgiving and as the post-ending episode "Nobody Likes Me" from the 2014 French TV series Peanuts)
- May 17, 1973
- May 18, 1973
- May 19, 1973
- May 20, 1973
- May 21, 1973
- May 22, 1973
- May 23, 1973
- May 24, 1973
- May 25, 1973
- May 26, 1973
- May 27, 1973
- May 28, 1973 (Peppermint Patty seems to have changed her mind since April 8.)
- May 29, 1973
- May 30, 1973
- May 31, 1973
| ← April 1973 | June 1973 → |