Lunar Calendar Month December 2017 (Macau)

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 Macau, Macau during December 2017.

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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
full moon	2017-12-03	23:47
3rd quarter	2017-12-10	15:51
new moon	2017-12-18	14:30
1st quarter	2017-12-26	17:20

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during December 2017.

Position	Dates	Time	Distance	Notes
Perigee	2017-12-04	16:43	357,495 km
Apogee	2017-12-19	09:28	406,604 km	Maximum apogee in 2017!

Meteor Activity

Active meteor showers this month and their peak days. For more information, see the meteor shower calendar 2017.

Name	Peak Day
Phoenicids	2017-12-02
σ-Hydrids	2017-12-11
Geminids	2017-12-14
Dec. L. Minorids	2017-12-19
Monocerotids	2017-12-08
Comae Ber.	2017-12-15
Ursids	2017-12-22

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
Aldebaran	2017-12-03 21:00
Beehive	2017-12-07 17:30
Regulus	2017-12-09 06:25
Mars	2017-12-14 00:27
Jupiter	2017-12-14 22:26
Aldebaran	2017-12-31 08:25

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of December 2017.

December 2017
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 48	27Monday	28Tuesday	29Wednesday	30Thursday	1Friday 87.5% illuminated Age:11.4	2Saturday 94.2% illuminated Age:12.5	3Sunday 98.5% illuminated Age:13.6
Week 49	4Monday 100% illuminated Age:14.8	5Tuesday 98.5% illuminated Age:15.9	6Wednesday 94% illuminated Age:17.1	7Thursday 87% illuminated Age:18.2	8Friday 78.1% illuminated Age:19.3	9Saturday 68% illuminated Age:20.4	10Sunday 57.2% illuminated Age:21.5
Week 50	11Monday 46.5% illuminated Age:22.5	12Tuesday 36.2% illuminated Age:23.5	13Wednesday 26.8% illuminated Age:24.4	14Thursday 18.5% illuminated Age:25.4	15Friday 11.5% illuminated Age:26.3	16Saturday 6.1% illuminated Age:27.2	17Sunday 2.3% illuminated Age:28.1
Week 51	18Monday 0.3% illuminated Age:29	19Tuesday 0.1% illuminated Age:0.3	20Wednesday 1.7% illuminated Age:1.2	21Thursday 5% illuminated Age:2.1	22Friday 9.9% illuminated Age:3	23Saturday 16.4% illuminated Age:3.9	24Sunday 24.1% illuminated Age:4.8
Week 52	25Monday 33% illuminated Age:5.8	26Tuesday 42.8% illuminated Age:6.7	27Wednesday 53.1% illuminated Age:7.7	28Thursday 63.7% illuminated Age:8.7	29Friday 73.9% illuminated Age:9.7	30Saturday 83.3% illuminated Age:10.8	31Sunday 91.2% illuminated Age:11.9
	1Monday	2Tuesday	3Wednesday	4Thursday	5Friday	6Saturday	7Sunday
	8Monday	9Tuesday	10Wednesday	11Thursday	12Friday	13Saturday	14Sunday