Moon Calendar for May, 2031
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Thursday, May 1, 2031 | Waxing Gibbous | 69.42% | π |
| Friday, May 2, 2031 | Waxing Gibbous | 78.36% | π |
| Saturday, May 3, 2031 | Waxing Gibbous | 86.36% | π |
| Sunday, May 4, 2031 | Waxing Gibbous | 92.95% | π |
| Monday, May 5, 2031 | Full Moon | 97.6% | π |
| Tuesday, May 6, 2031 | Full Moon | 99.85% | π |
| Wednesday, May 7, 2031 | Full Moon | 99.36% | π |
| Thursday, May 8, 2031 | Waning Gibbous | 96.02% | π |
| Friday, May 9, 2031 | Waning Gibbous | 90% | π |
| Saturday, May 10, 2031 | Waning Gibbous | 81.73% | π |
| Sunday, May 11, 2031 | Waning Gibbous | 71.81% | π |
| Monday, May 12, 2031 | Last Quarter | 60.89% | π |
| Tuesday, May 13, 2031 | Last Quarter | 49.64% | π |
| Wednesday, May 14, 2031 | Last Quarter | 38.63% | π |
| Thursday, May 15, 2031 | Waning Crescent | 28.39% | π |
| Friday, May 16, 2031 | Waning Crescent | 19.33% | π |
| Saturday, May 17, 2031 | Waning Crescent | 11.79% | π |
| Sunday, May 18, 2031 | Waning Crescent | 6% | π |
| Monday, May 19, 2031 | New Moon | 2.12% | π |
| Tuesday, May 20, 2031 | New Moon | 0.22% | π |
| Wednesday, May 21, 2031 | New Moon | 0.27% | π |
| Thursday, May 22, 2031 | New Moon | 2.2% | π |
| Friday, May 23, 2031 | Waxing Crescent | 5.88% | π |
| Saturday, May 24, 2031 | Waxing Crescent | 11.13% | π |
| Sunday, May 25, 2031 | Waxing Crescent | 17.76% | π |
| Monday, May 26, 2031 | Waxing Crescent | 25.56% | π |
| Tuesday, May 27, 2031 | First Quarter | 34.29% | π |
| Wednesday, May 28, 2031 | First Quarter | 43.73% | π |
| Thursday, May 29, 2031 | First Quarter | 53.6% | π |
| Friday, May 30, 2031 | First Quarter | 63.61% | π |
| Saturday, May 31, 2031 | Waxing Gibbous | 73.35% | π |