Moon Calendar for May, 2013
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Wednesday, May 1, 2013 | Last Quarter | 62.35% | π |
| Thursday, May 2, 2013 | Last Quarter | 51.13% | π |
| Friday, May 3, 2013 | Last Quarter | 40.11% | π |
| Saturday, May 4, 2013 | Waning Crescent | 29.79% | π |
| Sunday, May 5, 2013 | Waning Crescent | 20.59% | π |
| Monday, May 6, 2013 | Waning Crescent | 12.84% | π |
| Tuesday, May 7, 2013 | Waning Crescent | 6.81% | π |
| Wednesday, May 8, 2013 | New Moon | 2.64% | π |
| Thursday, May 9, 2013 | New Moon | 0.4% | π |
| Friday, May 10, 2013 | New Moon | 0.12% | π |
| Saturday, May 11, 2013 | New Moon | 1.71% | π |
| Sunday, May 12, 2013 | Waxing Crescent | 5.07% | π |
| Monday, May 13, 2013 | Waxing Crescent | 10.03% | π |
| Tuesday, May 14, 2013 | Waxing Crescent | 16.41% | π |
| Wednesday, May 15, 2013 | Waxing Crescent | 24.01% | π |
| Thursday, May 16, 2013 | First Quarter | 32.6% | π |
| Friday, May 17, 2013 | First Quarter | 41.96% | π |
| Saturday, May 18, 2013 | First Quarter | 51.81% | π |
| Sunday, May 19, 2013 | First Quarter | 61.87% | π |
| Monday, May 20, 2013 | Waxing Gibbous | 71.74% | π |
| Tuesday, May 21, 2013 | Waxing Gibbous | 80.97% | π |
| Wednesday, May 22, 2013 | Waxing Gibbous | 89.01% | π |
| Thursday, May 23, 2013 | Waxing Gibbous | 95.22% | π |
| Friday, May 24, 2013 | Full Moon | 99.01% | π |
| Saturday, May 25, 2013 | Full Moon | 99.94% | π |
| Sunday, May 26, 2013 | Full Moon | 97.82% | π |
| Monday, May 27, 2013 | Waning Gibbous | 92.8% | π |
| Tuesday, May 28, 2013 | Waning Gibbous | 85.32% | π |
| Wednesday, May 29, 2013 | Waning Gibbous | 76.02% | π |
| Thursday, May 30, 2013 | Last Quarter | 65.59% | π |
| Friday, May 31, 2013 | Last Quarter | 54.7% | π |