Moon Calendar for May, 2011
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Sunday, May 1, 2011 | Waning Crescent | 4.12% | π |
| Monday, May 2, 2011 | New Moon | 1.17% | π |
| Tuesday, May 3, 2011 | New Moon | 0.01% | π |
| Wednesday, May 4, 2011 | New Moon | 0.76% | π |
| Thursday, May 5, 2011 | New Moon | 3.45% | π |
| Friday, May 6, 2011 | Waxing Crescent | 8.08% | π |
| Saturday, May 7, 2011 | Waxing Crescent | 14.54% | π |
| Sunday, May 8, 2011 | Waxing Crescent | 22.66% | π |
| Monday, May 9, 2011 | First Quarter | 32.16% | π |
| Tuesday, May 10, 2011 | First Quarter | 42.7% | π |
| Wednesday, May 11, 2011 | First Quarter | 53.82% | π |
| Thursday, May 12, 2011 | First Quarter | 65% | π |
| Friday, May 13, 2011 | Waxing Gibbous | 75.62% | π |
| Saturday, May 14, 2011 | Waxing Gibbous | 85.02% | π |
| Sunday, May 15, 2011 | Waxing Gibbous | 92.53% | π |
| Monday, May 16, 2011 | Full Moon | 97.6% | π |
| Tuesday, May 17, 2011 | Full Moon | 99.88% | π |
| Wednesday, May 18, 2011 | Full Moon | 99.29% | π |
| Thursday, May 19, 2011 | Waning Gibbous | 96.04% | π |
| Friday, May 20, 2011 | Waning Gibbous | 90.52% | π |
| Saturday, May 21, 2011 | Waning Gibbous | 83.25% | π |
| Sunday, May 22, 2011 | Waning Gibbous | 74.75% | π |
| Monday, May 23, 2011 | Last Quarter | 65.49% | π |
| Tuesday, May 24, 2011 | Last Quarter | 55.87% | π |
| Wednesday, May 25, 2011 | Last Quarter | 46.23% | π |
| Thursday, May 26, 2011 | Last Quarter | 36.85% | π |
| Friday, May 27, 2011 | Waning Crescent | 27.99% | π |
| Saturday, May 28, 2011 | Waning Crescent | 19.91% | π |
| Sunday, May 29, 2011 | Waning Crescent | 12.87% | π |
| Monday, May 30, 2011 | Waning Crescent | 7.12% | π |
| Tuesday, May 31, 2011 | New Moon | 2.92% | π |