On Friday, December 20, 2013 the Moon was in its waning gibbous phase, with 91% of its disk illuminated and an age of 17.6 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 | 91% |
| Moon age | 17.6 days |
| Day of the week | Friday |
| Last new moon | December 2, 2013 at 22:23 |
| Next full moon | January 16, 2014 at 02:53 (in 26.6 days) |
| Next new moon | January 1, 2014 at 09:14 (in 11.9 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 19, 2013 December 21, 2013 →
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 20, 2013 it had completed 60% of the cycle that began with the new moon on December 2, 2013.
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 20, 2013. For sun times, check sunrise and sunset.