Moon Calendar for May, 2013
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Wednesday, May 1, 2013 | Last Quarter | 63.95% | π |
| Thursday, May 2, 2013 | Last Quarter | 52.75% | π |
| Friday, May 3, 2013 | Last Quarter | 41.67% | π |
| Saturday, May 4, 2013 | Last Quarter | 31.22% | π |
| Sunday, May 5, 2013 | Waning Crescent | 21.83% | π |
| Monday, May 6, 2013 | Waning Crescent | 13.86% | π |
| Tuesday, May 7, 2013 | Waning Crescent | 7.57% | π |
| Wednesday, May 8, 2013 | New Moon | 3.12% | π |
| Thursday, May 9, 2013 | New Moon | 0.61% | π |
| Friday, May 10, 2013 | New Moon | 0.04% | π |
| Saturday, May 11, 2013 | New Moon | 1.37% | π |
| Sunday, May 12, 2013 | Waxing Crescent | 4.48% | π |
| Monday, May 13, 2013 | Waxing Crescent | 9.22% | π |
| Tuesday, May 14, 2013 | Waxing Crescent | 15.41% | π |
| Wednesday, May 15, 2013 | Waxing Crescent | 22.84% | π |
| Thursday, May 16, 2013 | First Quarter | 31.31% | π |
| Friday, May 17, 2013 | First Quarter | 40.57% | π |
| Saturday, May 18, 2013 | First Quarter | 50.37% | π |
| Sunday, May 19, 2013 | First Quarter | 60.41% | π |
| Monday, May 20, 2013 | Waxing Gibbous | 70.34% | π |
| Tuesday, May 21, 2013 | Waxing Gibbous | 79.7% | π |
| Wednesday, May 22, 2013 | Waxing Gibbous | 87.94% | π |
| Thursday, May 23, 2013 | Waxing Gibbous | 94.46% | π |
| Friday, May 24, 2013 | Full Moon | 98.63% | π |
| Saturday, May 25, 2013 | Full Moon | 100% | π |
| Sunday, May 26, 2013 | Full Moon | 98.32% | π |
| Monday, May 27, 2013 | Waning Gibbous | 93.69% | π |
| Tuesday, May 28, 2013 | Waning Gibbous | 86.53% | π |
| Wednesday, May 29, 2013 | Waning Gibbous | 77.45% | π |
| Thursday, May 30, 2013 | Last Quarter | 67.14% | π |
| Friday, May 31, 2013 | Last Quarter | 56.27% | π |