| New moon | Dec 11, 820 | |
| Waxing crescent | from Dec 12, 820 to Dec 16, 820 | |
| Moon first quarter | Dec 17, 820 | |
| Growing moon | from Dec 18, 820 to Dec 24, 820 | |
| Full moon | Dec 25, 820 | |
| Waning moon | from Dec 26, 820 to Jan 1, 821 | |
| Moon third quarter | Jan 2, 821 | |
| Waning crescent | from Jan 3, 821 to Jan 8, 821 |
| New moon | Jan 9, 821 | |
| Waxing crescent | from Jan 10, 821 to Jan 15, 821 | |
| Moon first quarter | Jan 16, 821 | |
| Growing moon | from Jan 17, 821 to Jan 23, 821 | |
| Full moon | Jan 24, 821 | |
| Waning moon | from Jan 25, 821 to Jan 30, 821 | |
| Moon third quarter | Jan 31, 821 | |
| Waning crescent | from Feb 1, 821 to Feb 7, 821 |