On Sunday, December 17, 1989 the Moon was in its waning gibbous phase, with 81% of its disk illuminated and an age of 19.2 days since the last new moon. The lit part starts to shrink. The Moon rises a few hours after dusk and is still in the sky when day breaks.
Moon data for this date
| Phase | 🌖 Waning Gibbous |
|---|---|
| Illumination | 81% |
| Moon age | 19.2 days |
| Day of the week | Sunday |
| Last new moon | November 28, 1989 at 07:41 |
| Next full moon | January 11, 1990 at 02:57 (in 24.6 days) |
| Next new moon | December 28, 1989 at 01:20 (in 10.6 days) |
The Moon on the surrounding days
Compare the phase and illumination over the three days before and after. Click a day to open its page.
← December 16, 1989 December 18, 1989 →
About the waning gibbous
The lit part starts to shrink. The Moon rises a few hours after dusk and is still in the sky when day breaks. The phase name comes from the Moon's position in its 29.53-day cycle: on December 17, 1989 it had completed 65% of the cycle that began with the new moon on November 28, 1989.
Looking for another date, such as a birthday? Use the Moon phase on the day I was born tool, see the Moon phase today page with the lunar calendar, or find the day of the week of December 17, 1989. For sun times, check sunrise and sunset.