Moon calendar: December 1980
The phases of the Moon are the changes in the illuminated part of the Moon visible from Earth over a cycle of about 29.5 days. In astrology, this cycle is measured by the angle between the Sun and the Moon. The new moon is the moment of conjunction, when the Sun and Moon are at the same degree; the full moon is the opposition, when the two are at opposite ends of the zodiac. Between these two points lie the phases in which the Moon waxes and wanes. Astrologers usually divide the cycle into eight phases, each corresponding to a 45-degree range of the Sun-Moon angle.
The Moon's sign changes and the void-of-course Moon
| Sign | Enters | Void of course begins | Leaves |
|---|---|---|---|
| Virgo | 28 November 22:37 | 1 December 03:32 | 1 December 10:13 |
| Libra | 1 December 10:13 | 3 December 09:51 | 3 December 22:59 |
| Scorpio | 3 December 22:59 | 6 December 05:01 | 6 December 10:57 |
| Sagittarius | 6 December 10:57 | 8 December 09:00 | 8 December 21:11 |
| Capricorn | 8 December 21:11 | 11 December 00:33 | 11 December 05:35 |
| Aquarius | 11 December 05:35 | 13 December 07:26 | 13 December 12:03 |
| Pisces | 13 December 12:03 | 15 December 12:09 | 15 December 16:21 |
| Aries | 15 December 16:21 | 17 December 11:15 | 17 December 18:36 |
| Taurus | 17 December 18:36 | 19 December 16:02 | 19 December 19:39 |
| Gemini | 19 December 19:39 | 21 December 10:59 | 21 December 21:03 |
| Cancer | 21 December 21:03 | 23 December 21:02 | 24 December 00:33 |
| Leo | 24 December 00:33 | 26 December 04:00 | 26 December 07:32 |
| Virgo | 26 December 07:32 | 28 December 14:36 | 28 December 18:04 |
| Libra | 28 December 18:04 | 30 December 18:43 | 31 December 06:35 |
| Scorpio | 31 December 06:35 | 2 January 15:45 | 2 January 18:41 |
Times are in Turkey time. The void-of-course Moon is the time from the Moon's last major aspect in its sign until it enters the next sign. For end times, durations and the daily chart, see the void-of-course Moon calendar.