Moon phase on December 11, 2030

Waning Gibbous, 97%
🌖 Waning Gibbous
Wednesday, December 11, 2030 · at noon (Brasília)
Illumination: 97% Age: 16.3 days Cycle: 55%

On Wednesday, December 11, 2030 the Moon will be in its waning gibbous phase, with 97% of its disk illuminated and an age of 16.3 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

Moon at noon Brasília time (UTC-3)
Phase🌖 Waning Gibbous
Illumination97%
Moon age16.3 days
Day of the weekWednesday
Last new moonNovember 25, 2030 at 03:47
Next full moonJanuary 8, 2031 at 15:26 (in 28.1 days)
Next new moonDecember 24, 2030 at 14:32 (in 13.1 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 10, 2030 December 12, 2030 →

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 11, 2030 it had completed 55% of the cycle that began with the new moon on November 25, 2030.

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 11, 2030. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on December 11, 2030?

On December 11, 2030 the Moon will be in its waning gibbous phase, with 97% of the disk lit (calculated at noon Brasília time).

How old is the Moon on that date?

The age is the time since the last new moon: 16.3 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after December 11, 2030 falls on January 8, 2031 at 15:26 Brasília time.

When is the next new moon after that date?

The next new moon after December 11, 2030 falls on December 24, 2030 at 14:32 Brasília time.

How is the Moon phase calculated?

With Jean Meeus's astronomical formulas for the instants of new, quarter and full moon. The age comes from the time since the last new moon and the illumination is (1 − cos(2π × cycle fraction)) / 2.

Is the phase the same everywhere in the world?

Yes, the phase and the illuminated percentage are the same across the planet at any given instant. Only the orientation changes: in the southern hemisphere a waxing Moon is lit on the left, in the northern one on the right.