| New moon | Dec 23, 979 | |
| Waxing crescent | from Dec 24, 979 to Dec 29, 979 | |
| Moon first quarter | Dec 30, 979 | |
| Growing moon | from Dec 31, 979 to Jan 5, 980 | |
| Full moon | Jan 6, 980 | |
| Waning moon | from Jan 7, 980 to Jan 13, 980 | |
| Moon third quarter | Jan 14, 980 | |
| Waning crescent | from Jan 15, 980 to Jan 20, 980 |
| New moon | Jan 21, 980 | |
| Waxing crescent | from Jan 22, 980 to Jan 27, 980 | |
| Moon first quarter | Jan 28, 980 | |
| Growing moon | from Jan 29, 980 to Feb 4, 980 | |
| Full moon | Feb 5, 980 | |
| Waning moon | from Feb 6, 980 to Feb 12, 980 | |
| Moon third quarter | Feb 13, 980 | |
| Waning crescent | from Feb 14, 980 to Feb 19, 980 |