On Friday, December 17, 1999 the Moon was in its waxing gibbous phase, with 72% of its disk illuminated and an age of 9.6 days since the last new moon. More than half of the disk is lit and the Moon already shows up in the afternoon. It stays visible most of the night, until the small hours.
Moon data for this date
| Phase | 🌔 Waxing Gibbous |
|---|---|
| Illumination | 72% |
| Moon age | 9.6 days |
| Day of the week | Friday |
| Last new moon | December 7, 1999 at 20:32 |
| Next full moon | December 22, 1999 at 15:31 (in 5.1 days) |
| Next new moon | January 6, 2000 at 16:14 (in 20.2 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, 1999 December 18, 1999 →
About the waxing gibbous
More than half of the disk is lit and the Moon already shows up in the afternoon. It stays visible most of the night, until the small hours. The phase name comes from the Moon's position in its 29.53-day cycle: on December 17, 1999 it had completed 32% of the cycle that began with the new moon on December 7, 1999.
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, 1999. For sun times, check sunrise and sunset.