Moon Calendar for May, 2013
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Wednesday, May 1, 2013 | Last Quarter | 55.43% | π |
| Thursday, May 2, 2013 | Last Quarter | 44.27% | π |
| Friday, May 3, 2013 | Last Quarter | 33.63% | π |
| Saturday, May 4, 2013 | Waning Crescent | 23.95% | π |
| Sunday, May 5, 2013 | Waning Crescent | 15.62% | π |
| Monday, May 6, 2013 | Waning Crescent | 8.9% | π |
| Tuesday, May 7, 2013 | Waning Crescent | 4.01% | π |
| Wednesday, May 8, 2013 | New Moon | 1.03% | π |
| Thursday, May 9, 2013 | New Moon | 0% | π |
| Friday, May 10, 2013 | New Moon | 0.89% | π |
| Saturday, May 11, 2013 | New Moon | 3.58% | π |
| Sunday, May 12, 2013 | Waxing Crescent | 7.95% | π |
| Monday, May 13, 2013 | Waxing Crescent | 13.81% | π |
| Tuesday, May 14, 2013 | Waxing Crescent | 20.97% | π |
| Wednesday, May 15, 2013 | Waxing Crescent | 29.21% | π |
| Thursday, May 16, 2013 | First Quarter | 38.3% | π |
| Friday, May 17, 2013 | First Quarter | 48% | π |
| Saturday, May 18, 2013 | First Quarter | 58.02% | π |
| Sunday, May 19, 2013 | First Quarter | 68.01% | π |
| Monday, May 20, 2013 | Waxing Gibbous | 77.55% | π |
| Tuesday, May 21, 2013 | Waxing Gibbous | 86.11% | π |
| Wednesday, May 22, 2013 | Waxing Gibbous | 93.1% | π |
| Thursday, May 23, 2013 | Full Moon | 97.88% | π |
| Friday, May 24, 2013 | Full Moon | 99.94% | π |
| Saturday, May 25, 2013 | Full Moon | 98.99% | π |
| Sunday, May 26, 2013 | Waning Gibbous | 95.04% | π |
| Monday, May 27, 2013 | Waning Gibbous | 88.44% | π |
| Tuesday, May 28, 2013 | Waning Gibbous | 79.75% | π |
| Wednesday, May 29, 2013 | Waning Gibbous | 69.67% | π |
| Thursday, May 30, 2013 | Last Quarter | 58.88% | π |
| Friday, May 31, 2013 | Last Quarter | 47.99% | π |