Moon Calendar for May, 2011
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Sunday, May 1, 2011 | New Moon | 2.25% | π |
| Monday, May 2, 2011 | New Moon | 0.29% | π |
| Tuesday, May 3, 2011 | New Moon | 0.19% | π |
| Wednesday, May 4, 2011 | New Moon | 2.03% | π |
| Thursday, May 5, 2011 | Waxing Crescent | 5.82% | π |
| Friday, May 6, 2011 | Waxing Crescent | 11.49% | π |
| Saturday, May 7, 2011 | Waxing Crescent | 18.91% | π |
| Sunday, May 8, 2011 | Waxing Crescent | 27.85% | π |
| Monday, May 9, 2011 | First Quarter | 37.98% | π |
| Tuesday, May 10, 2011 | First Quarter | 48.91% | π |
| Wednesday, May 11, 2011 | First Quarter | 60.13% | π |
| Thursday, May 12, 2011 | Waxing Gibbous | 71.08% | π |
| Friday, May 13, 2011 | Waxing Gibbous | 81.1% | π |
| Saturday, May 14, 2011 | Waxing Gibbous | 89.51% | π |
| Sunday, May 15, 2011 | Waxing Gibbous | 95.71% | π |
| Monday, May 16, 2011 | Full Moon | 99.24% | π |
| Tuesday, May 17, 2011 | Full Moon | 99.9% | π |
| Wednesday, May 18, 2011 | Full Moon | 97.77% | π |
| Thursday, May 19, 2011 | Waning Gibbous | 93.19% | π |
| Friday, May 20, 2011 | Waning Gibbous | 86.62% | π |
| Saturday, May 21, 2011 | Waning Gibbous | 78.6% | π |
| Sunday, May 22, 2011 | Waning Gibbous | 69.62% | π |
| Monday, May 23, 2011 | Last Quarter | 60.11% | π |
| Tuesday, May 24, 2011 | Last Quarter | 50.44% | π |
| Wednesday, May 25, 2011 | Last Quarter | 40.91% | π |
| Thursday, May 26, 2011 | Last Quarter | 31.79% | π |
| Friday, May 27, 2011 | Waning Crescent | 23.34% | π |
| Saturday, May 28, 2011 | Waning Crescent | 15.81% | π |
| Sunday, May 29, 2011 | Waning Crescent | 9.46% | π |
| Monday, May 30, 2011 | Waning Crescent | 4.55% | π |
| Tuesday, May 31, 2011 | New Moon | 1.33% | π |