Lunar Calendar Month December 2021 (Northern Hemisphere)

The Moon is the only natural satellite of the Earth and the fifth largest moon in the Solar System. It is the largest natural satellite in the solar system relative to the size of its planet. The following is information specific for Washington, Northern Hemisphere during December 2021.

Choose a country from the list to get relevant information:

Date and time of moon phases

The information in the following table comes from calculations published by the Astronomical Applications Department of the U.S. Naval Observatory.

Moon phases	Dates	Time
new moon	2021-12-04	02:43
1st quarter	2021-12-10	20:35
full moon	2021-12-18	23:35
3rd quarter	2021-12-26	21:24

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during December 2021.

Position	Dates	Time	Distance	Notes
Perigee	2021-12-04	05:02	356,793 km	Maximum perigee in 2021!
Apogee	2021-12-17	21:18	406,321 km

Eclipses in December 2021

The following is information about eclipses occuring worldwide during December 2021. The eclipses listed here may be totally visible, partly visible or not visible in any part of Northern Hemisphere.

Type	Dates	Saros	Notes
solar eclipse	2021-12-04	152

Moon-Planet Conjunctions

A Moon-planet conjunction occurs when an astronomical object has either the same, or nearly the same, right ascension or the same ecliptic longitude of that of the Moon, as observed from Earth.

Astronomical Objects	Date and Time
Venus	2021-12-06 19:48
Saturn	2021-12-07 20:52
Jupiter	2021-12-09 01:07
Pollux	2021-12-21 04:20
Beehive	2021-12-22 05:28
Mars	2021-12-31 15:13

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of December 2021.

December 2021
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 48	29Monday	30Tuesday	1Wednesday 13.7% illuminated Age:26	2Thursday 6.6% illuminated Age:27.1	3Friday 1.9% illuminated Age:28.2	4Saturday 0% illuminated Age:29.4	5Sunday 1.2% illuminated Age:1
Week 49	6Monday 5.4% illuminated Age:2.2	7Tuesday 12% illuminated Age:3.3	8Wednesday 20.6% illuminated Age:4.4	9Thursday 30.4% illuminated Age:5.5	10Friday 40.8% illuminated Age:6.5	11Saturday 51.3% illuminated Age:7.5	12Sunday 61.4% illuminated Age:8.5
Week 50	13Monday 70.8% illuminated Age:9.4	14Tuesday 79.2% illuminated Age:10.3	15Wednesday 86.4% illuminated Age:11.2	16Thursday 92.2% illuminated Age:12.1	17Friday 96.5% illuminated Age:13	18Saturday 99.1% illuminated Age:13.9	19Sunday 100% illuminated Age:14.8
Week 51	20Monday 99.1% illuminated Age:15.7	21Tuesday 96.3% illuminated Age:16.6	22Wednesday 91.9% illuminated Age:17.5	23Thursday 85.8% illuminated Age:18.4	24Friday 78.2% illuminated Age:19.3	25Saturday 69.3% illuminated Age:20.3	26Sunday 59.4% illuminated Age:21.3
Week 52	27Monday 48.9% illuminated Age:22.3	28Tuesday 38% illuminated Age:23.3	29Wednesday 27.4% illuminated Age:24.3	30Thursday 17.7% illuminated Age:25.4	31Friday 9.6% illuminated Age:26.6	1Saturday	2Sunday
	3Monday	4Tuesday	5Wednesday	6Thursday	7Friday	8Saturday	9Sunday
	10Monday	11Tuesday	12Wednesday	13Thursday	14Friday	15Saturday	16Sunday