Moon Calendar for May, 2001
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Tuesday, May 1, 2001 | First Quarter | 55.75% | π |
| Wednesday, May 2, 2001 | First Quarter | 66.93% | π |
| Thursday, May 3, 2001 | Waxing Gibbous | 77.24% | π |
| Friday, May 4, 2001 | Waxing Gibbous | 86.1% | π |
| Saturday, May 5, 2001 | Waxing Gibbous | 93.02% | π |
| Sunday, May 6, 2001 | Full Moon | 97.65% | π |
| Monday, May 7, 2001 | Full Moon | 99.82% | π |
| Tuesday, May 8, 2001 | Full Moon | 99.55% | π |
| Wednesday, May 9, 2001 | Full Moon | 97% | π |
| Thursday, May 10, 2001 | Waning Gibbous | 92.47% | π |
| Friday, May 11, 2001 | Waning Gibbous | 86.31% | π |
| Saturday, May 12, 2001 | Waning Gibbous | 78.86% | π |
| Sunday, May 13, 2001 | Waning Gibbous | 70.48% | π |
| Monday, May 14, 2001 | Last Quarter | 61.45% | π |
| Tuesday, May 15, 2001 | Last Quarter | 52.08% | π |
| Wednesday, May 16, 2001 | Last Quarter | 42.62% | π |
| Thursday, May 17, 2001 | Last Quarter | 33.35% | π |
| Friday, May 18, 2001 | Waning Crescent | 24.55% | π |
| Saturday, May 19, 2001 | Waning Crescent | 16.55% | π |
| Sunday, May 20, 2001 | Waning Crescent | 9.7% | π |
| Monday, May 21, 2001 | Waning Crescent | 4.41% | π |
| Tuesday, May 22, 2001 | New Moon | 1.06% | π |
| Wednesday, May 23, 2001 | New Moon | 0.01% | π |
| Thursday, May 24, 2001 | New Moon | 1.49% | π |
| Friday, May 25, 2001 | Waxing Crescent | 5.57% | π |
| Saturday, May 26, 2001 | Waxing Crescent | 12.08% | π |
| Sunday, May 27, 2001 | Waxing Crescent | 20.66% | π |
| Monday, May 28, 2001 | Waxing Crescent | 30.8% | π |
| Tuesday, May 29, 2001 | First Quarter | 41.9% | π |
| Wednesday, May 30, 2001 | First Quarter | 53.32% | π |
| Thursday, May 31, 2001 | First Quarter | 64.47% | π |