Moon phase on December 11, 2028

Waning Crescent, 21%
🌘 Waning Crescent
Monday, December 11, 2028 · at noon (Brasília)
Illumination: 21% Age: 25.1 days Cycle: 85%

On Monday, December 11, 2028 the Moon will be in its waning crescent phase, with 21% of its disk illuminated and an age of 25.1 days since the last new moon. Only a thin sliver is left, visible in the east shortly before dawn, as the cycle prepares to start over with the new moon.

Moon data for this date

Moon at noon Brasília time (UTC-3)
Phase🌘 Waning Crescent
Illumination21%
Moon age25.1 days
Day of the weekMonday
Last new moonNovember 16, 2028 at 10:18
Next full moonDecember 31, 2028 at 13:48 (in 20.1 days)
Next new moonDecember 15, 2028 at 23:06 (in 4.5 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, 2028 December 12, 2028 →

About the waning crescent

Only a thin sliver is left, visible in the east shortly before dawn, as the cycle prepares to start over with the new moon. The phase name comes from the Moon's position in its 29.53-day cycle: on December 11, 2028 it had completed 85% of the cycle that began with the new moon on November 16, 2028.

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, 2028. For sun times, check sunrise and sunset.

Frequently asked questions

What is the Moon phase on December 11, 2028?

On December 11, 2028 the Moon will be in its waning crescent phase, with 21% 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: 25.1 days of an average 29.53-day cycle.

When is the next full moon after that date?

The next full moon after December 11, 2028 falls on December 31, 2028 at 13:48 Brasília time.

When is the next new moon after that date?

The next new moon after December 11, 2028 falls on December 15, 2028 at 23:06 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.