Moon Calendar for May, 2021
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Saturday, May 1, 2021 | Last Quarter | 69.01% | π |
| Sunday, May 2, 2021 | Last Quarter | 58.36% | π |
| Monday, May 3, 2021 | Last Quarter | 47.67% | π |
| Tuesday, May 4, 2021 | Last Quarter | 37.39% | π |
| Wednesday, May 5, 2021 | Waning Crescent | 27.89% | π |
| Thursday, May 6, 2021 | Waning Crescent | 19.47% | π |
| Friday, May 7, 2021 | Waning Crescent | 12.35% | π |
| Saturday, May 8, 2021 | Waning Crescent | 6.74% | π |
| Sunday, May 9, 2021 | New Moon | 2.75% | π |
| Monday, May 10, 2021 | New Moon | 0.51% | π |
| Tuesday, May 11, 2021 | New Moon | 0.06% | π |
| Wednesday, May 12, 2021 | New Moon | 1.41% | π |
| Thursday, May 13, 2021 | Waxing Crescent | 4.52% | π |
| Friday, May 14, 2021 | Waxing Crescent | 9.32% | π |
| Saturday, May 15, 2021 | Waxing Crescent | 15.67% | π |
| Sunday, May 16, 2021 | Waxing Crescent | 23.42% | π |
| Monday, May 17, 2021 | First Quarter | 32.35% | π |
| Tuesday, May 18, 2021 | First Quarter | 42.22% | π |
| Wednesday, May 19, 2021 | First Quarter | 52.71% | π |
| Thursday, May 20, 2021 | First Quarter | 63.4% | π |
| Friday, May 21, 2021 | Waxing Gibbous | 73.81% | π |
| Saturday, May 22, 2021 | Waxing Gibbous | 83.31% | π |
| Sunday, May 23, 2021 | Waxing Gibbous | 91.23% | π |
| Monday, May 24, 2021 | Full Moon | 96.88% | π |
| Tuesday, May 25, 2021 | Full Moon | 99.72% | π |
| Wednesday, May 26, 2021 | Full Moon | 99.48% | π |
| Thursday, May 27, 2021 | Full Moon | 96.23% | π |
| Friday, May 28, 2021 | Waning Gibbous | 90.35% | π |
| Saturday, May 29, 2021 | Waning Gibbous | 82.42% | π |
| Sunday, May 30, 2021 | Waning Gibbous | 73.11% | π |
| Monday, May 31, 2021 | Last Quarter | 63.04% | π |