Moon Calendar for May, 2021
| Date | Moon Phase | Illumination | Moon Icon |
|---|---|---|---|
| Saturday, May 1, 2021 | Waning Gibbous | 71.83% | π |
| Sunday, May 2, 2021 | Last Quarter | 61.29% | π |
| Monday, May 3, 2021 | Last Quarter | 50.55% | π |
| Tuesday, May 4, 2021 | Last Quarter | 40.12% | π |
| Wednesday, May 5, 2021 | Waning Crescent | 30.38% | π |
| Thursday, May 6, 2021 | Waning Crescent | 21.64% | π |
| Friday, May 7, 2021 | Waning Crescent | 14.15% | π |
| Saturday, May 8, 2021 | Waning Crescent | 8.11% | π |
| Sunday, May 9, 2021 | New Moon | 3.67% | π |
| Monday, May 10, 2021 | New Moon | 0.94% | π |
| Tuesday, May 11, 2021 | New Moon | 0% | π |
| Wednesday, May 12, 2021 | New Moon | 0.86% | π |
| Thursday, May 13, 2021 | New Moon | 3.5% | π |
| Friday, May 14, 2021 | Waxing Crescent | 7.85% | π |
| Saturday, May 15, 2021 | Waxing Crescent | 13.8% | π |
| Sunday, May 16, 2021 | Waxing Crescent | 21.18% | π |
| Monday, May 17, 2021 | Waxing Crescent | 29.82% | π |
| Tuesday, May 18, 2021 | First Quarter | 39.46% | π |
| Wednesday, May 19, 2021 | First Quarter | 49.81% | π |
| Thursday, May 20, 2021 | First Quarter | 60.5% | π |
| Friday, May 21, 2021 | Waxing Gibbous | 71.04% | π |
| Saturday, May 22, 2021 | Waxing Gibbous | 80.85% | π |
| Sunday, May 23, 2021 | Waxing Gibbous | 89.27% | π |
| Monday, May 24, 2021 | Waxing Gibbous | 95.6% | π |
| Tuesday, May 25, 2021 | Full Moon | 99.25% | π |
| Wednesday, May 26, 2021 | Full Moon | 99.86% | π |
| Thursday, May 27, 2021 | Full Moon | 97.4% | π |
| Friday, May 28, 2021 | Waning Gibbous | 92.18% | π |
| Saturday, May 29, 2021 | Waning Gibbous | 84.75% | π |
| Sunday, May 30, 2021 | Waning Gibbous | 75.75% | π |
| Monday, May 31, 2021 | Last Quarter | 65.82% | π |