Moon Calendar for May, 2013
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Wednesday, May 1, 2013 | Last Quarter | 60.2% | π |
| Thursday, May 2, 2013 | Last Quarter | 48.98% | π |
| Friday, May 3, 2013 | Last Quarter | 38.06% | π |
| Saturday, May 4, 2013 | Waning Crescent | 27.92% | π |
| Sunday, May 5, 2013 | Waning Crescent | 18.98% | π |
| Monday, May 6, 2013 | Waning Crescent | 11.55% | π |
| Tuesday, May 7, 2013 | Waning Crescent | 5.86% | π |
| Wednesday, May 8, 2013 | New Moon | 2.05% | π |
| Thursday, May 9, 2013 | New Moon | 0.2% | π |
| Friday, May 10, 2013 | New Moon | 0.28% | π |
| Saturday, May 11, 2013 | New Moon | 2.22% | π |
| Sunday, May 12, 2013 | Waxing Crescent | 5.9% | π |
| Monday, May 13, 2013 | Waxing Crescent | 11.15% | π |
| Tuesday, May 14, 2013 | Waxing Crescent | 17.78% | π |
| Wednesday, May 15, 2013 | Waxing Crescent | 25.59% | π |
| Thursday, May 16, 2013 | First Quarter | 34.35% | π |
| Friday, May 17, 2013 | First Quarter | 43.82% | π |
| Saturday, May 18, 2013 | First Quarter | 53.74% | π |
| Sunday, May 19, 2013 | First Quarter | 63.79% | π |
| Monday, May 20, 2013 | Waxing Gibbous | 73.58% | π |
| Tuesday, May 21, 2013 | Waxing Gibbous | 82.63% | π |
| Wednesday, May 22, 2013 | Waxing Gibbous | 90.36% | π |
| Thursday, May 23, 2013 | Waxing Gibbous | 96.15% | π |
| Friday, May 24, 2013 | Full Moon | 99.42% | π |
| Saturday, May 25, 2013 | Full Moon | 99.77% | π |
| Sunday, May 26, 2013 | Full Moon | 97.07% | π |
| Monday, May 27, 2013 | Waning Gibbous | 91.54% | π |
| Tuesday, May 28, 2013 | Waning Gibbous | 83.65% | π |
| Wednesday, May 29, 2013 | Waning Gibbous | 74.08% | π |
| Thursday, May 30, 2013 | Last Quarter | 63.51% | π |
| Friday, May 31, 2013 | Last Quarter | 52.6% | π |