Moon Calendar for May, 2013
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Wednesday, May 1, 2013 | Last Quarter | 60.64% | π |
| Thursday, May 2, 2013 | Last Quarter | 49.42% | π |
| Friday, May 3, 2013 | Last Quarter | 38.47% | π |
| Saturday, May 4, 2013 | Waning Crescent | 28.3% | π |
| Sunday, May 5, 2013 | Waning Crescent | 19.3% | π |
| Monday, May 6, 2013 | Waning Crescent | 11.8% | π |
| Tuesday, May 7, 2013 | Waning Crescent | 6.04% | π |
| Wednesday, May 8, 2013 | New Moon | 2.17% | π |
| Thursday, May 9, 2013 | New Moon | 0.24% | π |
| Friday, May 10, 2013 | New Moon | 0.24% | π |
| Saturday, May 11, 2013 | New Moon | 2.11% | π |
| Sunday, May 12, 2013 | Waxing Crescent | 5.73% | π |
| Monday, May 13, 2013 | Waxing Crescent | 10.92% | π |
| Tuesday, May 14, 2013 | Waxing Crescent | 17.5% | π |
| Wednesday, May 15, 2013 | Waxing Crescent | 25.26% | π |
| Thursday, May 16, 2013 | First Quarter | 33.99% | π |
| Friday, May 17, 2013 | First Quarter | 43.44% | π |
| Saturday, May 18, 2013 | First Quarter | 53.35% | π |
| Sunday, May 19, 2013 | First Quarter | 63.4% | π |
| Monday, May 20, 2013 | Waxing Gibbous | 73.21% | π |
| Tuesday, May 21, 2013 | Waxing Gibbous | 82.3% | π |
| Wednesday, May 22, 2013 | Waxing Gibbous | 90.09% | π |
| Thursday, May 23, 2013 | Waxing Gibbous | 95.97% | π |
| Friday, May 24, 2013 | Full Moon | 99.35% | π |
| Saturday, May 25, 2013 | Full Moon | 99.82% | π |
| Sunday, May 26, 2013 | Full Moon | 97.24% | π |
| Monday, May 27, 2013 | Waning Gibbous | 91.8% | π |
| Tuesday, May 28, 2013 | Waning Gibbous | 84% | π |
| Wednesday, May 29, 2013 | Waning Gibbous | 74.48% | π |
| Thursday, May 30, 2013 | Last Quarter | 63.94% | π |
| Friday, May 31, 2013 | Last Quarter | 53.02% | π |