Moon Calendar for May, 2010
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Saturday, May 1, 2010 | Waning Gibbous | 85.38% | π |
| Sunday, May 2, 2010 | Waning Gibbous | 77.59% | π |
| Monday, May 3, 2010 | Last Quarter | 68.93% | π |
| Tuesday, May 4, 2010 | Last Quarter | 59.72% | π |
| Wednesday, May 5, 2010 | Last Quarter | 50.27% | π |
| Thursday, May 6, 2010 | Last Quarter | 40.85% | π |
| Friday, May 7, 2010 | Last Quarter | 31.74% | π |
| Saturday, May 8, 2010 | Waning Crescent | 23.19% | π |
| Sunday, May 9, 2010 | Waning Crescent | 15.51% | π |
| Monday, May 10, 2010 | Waning Crescent | 9.02% | π |
| Tuesday, May 11, 2010 | Waning Crescent | 4.06% | π |
| Wednesday, May 12, 2010 | New Moon | 0.95% | π |
| Thursday, May 13, 2010 | New Moon | 0.01% | π |
| Friday, May 14, 2010 | New Moon | 1.44% | π |
| Saturday, May 15, 2010 | Waxing Crescent | 5.31% | π |
| Sunday, May 16, 2010 | Waxing Crescent | 11.51% | π |
| Monday, May 17, 2010 | Waxing Crescent | 19.77% | π |
| Tuesday, May 18, 2010 | Waxing Crescent | 29.64% | π |
| Wednesday, May 19, 2010 | First Quarter | 40.59% | π |
| Thursday, May 20, 2010 | First Quarter | 52.02% | π |
| Friday, May 21, 2010 | First Quarter | 63.32% | π |
| Saturday, May 22, 2010 | Waxing Gibbous | 73.9% | π |
| Sunday, May 23, 2010 | Waxing Gibbous | 83.18% | π |
| Monday, May 24, 2010 | Waxing Gibbous | 90.71% | π |
| Tuesday, May 25, 2010 | Waxing Gibbous | 96.13% | π |
| Wednesday, May 26, 2010 | Full Moon | 99.22% | π |
| Thursday, May 27, 2010 | Full Moon | 99.96% | π |
| Friday, May 28, 2010 | Full Moon | 98.46% | π |
| Saturday, May 29, 2010 | Waning Gibbous | 94.93% | π |
| Sunday, May 30, 2010 | Waning Gibbous | 89.65% | π |
| Monday, May 31, 2010 | Waning Gibbous | 82.95% | π |