- May 1, 1999
- May 2, 1999
- May 3, 1999 (The last time Sally develops a new philosophy)
- May 4, 1999
- May 5, 1999
- May 6, 1999
- May 7, 1999
- May 8, 1999
- May 9, 1999
- May 10, 1999
- May 11, 1999
- May 12, 1999
- May 13, 1999
- May 14, 1999
- May 15, 1999
- May 16, 1999
- May 17, 1999
- May 18, 1999
- May 19, 1999
- May 20, 1999
- May 21, 1999
- May 22, 1999
- May 23, 1999
- May 24, 1999
- May 25, 1999
- May 26, 1999
- May 27, 1999
- May 28, 1999
- May 29, 1999
- May 30, 1999
- May 31, 1999
| ← April 1999 | June 1999 → |