Moon Calendar for May, 2001
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Tuesday, May 1, 2001 | First Quarter | 57.2% | π |
| Wednesday, May 2, 2001 | First Quarter | 68.3% | π |
| Thursday, May 3, 2001 | Waxing Gibbous | 78.45% | π |
| Friday, May 4, 2001 | Waxing Gibbous | 87.09% | π |
| Saturday, May 5, 2001 | Waxing Gibbous | 93.74% | π |
| Sunday, May 6, 2001 | Full Moon | 98.07% | π |
| Monday, May 7, 2001 | Full Moon | 99.92% | π |
| Tuesday, May 8, 2001 | Full Moon | 99.34% | π |
| Wednesday, May 9, 2001 | Full Moon | 96.53% | π |
| Thursday, May 10, 2001 | Waning Gibbous | 91.77% | π |
| Friday, May 11, 2001 | Waning Gibbous | 85.43% | π |
| Saturday, May 12, 2001 | Waning Gibbous | 77.84% | π |
| Sunday, May 13, 2001 | Waning Gibbous | 69.36% | π |
| Monday, May 14, 2001 | Last Quarter | 60.27% | π |
| Tuesday, May 15, 2001 | Last Quarter | 50.88% | π |
| Wednesday, May 16, 2001 | Last Quarter | 41.43% | π |
| Thursday, May 17, 2001 | Last Quarter | 32.2% | π |
| Friday, May 18, 2001 | Waning Crescent | 23.48% | π |
| Saturday, May 19, 2001 | Waning Crescent | 15.61% | π |
| Sunday, May 20, 2001 | Waning Crescent | 8.93% | π |
| Monday, May 21, 2001 | Waning Crescent | 3.86% | π |
| Tuesday, May 22, 2001 | New Moon | 0.79% | π |
| Wednesday, May 23, 2001 | New Moon | 0.05% | π |
| Thursday, May 24, 2001 | New Moon | 1.87% | π |
| Friday, May 25, 2001 | Waxing Crescent | 6.26% | π |
| Saturday, May 26, 2001 | Waxing Crescent | 13.06% | π |
| Sunday, May 27, 2001 | Waxing Crescent | 21.88% | π |
| Monday, May 28, 2001 | First Quarter | 32.17% | π |
| Tuesday, May 29, 2001 | First Quarter | 43.35% | π |
| Wednesday, May 30, 2001 | First Quarter | 54.77% | π |
| Thursday, May 31, 2001 | First Quarter | 65.84% | π |