Moon Calendar for May, 2013
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Wednesday, May 1, 2013 | Last Quarter | 63.15% | π |
| Thursday, May 2, 2013 | Last Quarter | 51.95% | π |
| Friday, May 3, 2013 | Last Quarter | 40.89% | π |
| Saturday, May 4, 2013 | Waning Crescent | 30.5% | π |
| Sunday, May 5, 2013 | Waning Crescent | 21.21% | π |
| Monday, May 6, 2013 | Waning Crescent | 13.35% | π |
| Tuesday, May 7, 2013 | Waning Crescent | 7.18% | π |
| Wednesday, May 8, 2013 | New Moon | 2.87% | π |
| Thursday, May 9, 2013 | New Moon | 0.5% | π |
| Friday, May 10, 2013 | New Moon | 0.07% | π |
| Saturday, May 11, 2013 | New Moon | 1.53% | π |
| Sunday, May 12, 2013 | Waxing Crescent | 4.77% | π |
| Monday, May 13, 2013 | Waxing Crescent | 9.62% | π |
| Tuesday, May 14, 2013 | Waxing Crescent | 15.9% | π |
| Wednesday, May 15, 2013 | Waxing Crescent | 23.42% | π |
| Thursday, May 16, 2013 | First Quarter | 31.95% | π |
| Friday, May 17, 2013 | First Quarter | 41.26% | π |
| Saturday, May 18, 2013 | First Quarter | 51.09% | π |
| Sunday, May 19, 2013 | First Quarter | 61.14% | π |
| Monday, May 20, 2013 | Waxing Gibbous | 71.04% | π |
| Tuesday, May 21, 2013 | Waxing Gibbous | 80.34% | π |
| Wednesday, May 22, 2013 | Waxing Gibbous | 88.48% | π |
| Thursday, May 23, 2013 | Waxing Gibbous | 94.84% | π |
| Friday, May 24, 2013 | Full Moon | 98.83% | π |
| Saturday, May 25, 2013 | Full Moon | 99.98% | π |
| Sunday, May 26, 2013 | Full Moon | 98.08% | π |
| Monday, May 27, 2013 | Waning Gibbous | 93.26% | π |
| Tuesday, May 28, 2013 | Waning Gibbous | 85.93% | π |
| Wednesday, May 29, 2013 | Waning Gibbous | 76.74% | π |
| Thursday, May 30, 2013 | Last Quarter | 66.37% | π |
| Friday, May 31, 2013 | Last Quarter | 55.49% | π |