Lunar Calendar Month September 2021 (South Korea)

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 Seoul, South Korea during September 2021.

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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
new moon	2021-09-07	09:52
1st quarter	2021-09-14	05:39
full moon	2021-09-21	08:55
3rd quarter	2021-09-29	10:57

Apogee and perigee of the Moon

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

Position	Dates	Time	Distance	Notes
Perigee	2021-09-11	19:07	368,463 km
Apogee	2021-09-27	06:45	404,639 km

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
Beehive	2021-09-04 13:07
Venus	2021-09-10 11:09
Saturn	2021-09-17 11:37
Jupiter	2021-09-18 15:50

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 30 days of September 2021.

September 2021
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 35	30Monday	31Tuesday	1Wednesday 37.6% illuminated Age:23.3	2Thursday 28.5% illuminated Age:24.2	3Friday 20.2% illuminated Age:25.2	4Saturday 12.8% illuminated Age:26.1	5Sunday 6.7% illuminated Age:27.1
Week 36	6Monday 2.4% illuminated Age:28.1	7Tuesday 0.2% illuminated Age:29.1	8Wednesday 0.4% illuminated Age:0.6	9Thursday 3.2% illuminated Age:1.7	10Friday 8.5% illuminated Age:2.8	11Saturday 16% illuminated Age:3.9	12Sunday 25.4% illuminated Age:5
Week 37	13Monday 36% illuminated Age:6.1	14Tuesday 47.3% illuminated Age:7.1	15Wednesday 58.7% illuminated Age:8.2	16Thursday 69.5% illuminated Age:9.3	17Friday 79.3% illuminated Age:10.3	18Saturday 87.5% illuminated Age:11.4	19Sunday 93.8% illuminated Age:12.4
Week 38	20Monday 97.9% illuminated Age:13.4	21Tuesday 99.8% illuminated Age:14.4	22Wednesday 99.6% illuminated Age:15.4	23Thursday 97.3% illuminated Age:16.3	24Friday 93.1% illuminated Age:17.3	25Saturday 87.4% illuminated Age:18.2	26Sunday 80.4% illuminated Age:19.1
Week 39	27Monday 72.4% illuminated Age:20	28Tuesday 63.6% illuminated Age:20.9	29Wednesday 54.2% illuminated Age:21.7	30Thursday 44.7% illuminated Age:22.6	1Friday	2Saturday	3Sunday
	4Monday	5Tuesday	6Wednesday	7Thursday	8Friday	9Saturday	10Sunday
	11Monday	12Tuesday	13Wednesday	14Thursday	15Friday	16Saturday	17Sunday