On Thursday, December 18, 1997 the Moon was in its waning gibbous phase, with 85% of its disk illuminated and an age of 18.5 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 | 85% |
| Moon age | 18.5 days |
| Day of the week | Thursday |
| Last new moon | November 30, 1997 at 00:14 |
| Next full moon | January 12, 1998 at 15:24 (in 25.1 days) |
| Next new moon | December 29, 1997 at 14:57 (in 11.1 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 17, 1997 December 19, 1997 →
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 18, 1997 it had completed 62% of the cycle that began with the new moon on November 30, 1997.
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 18, 1997. For sun times, check sunrise and sunset.