Lunar Calendar Month September 2021 (Sint Maarten)

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 Philipsburg, Sint Maarten 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	2021-09-06	20:52
1st quarter	2021-09-13	16:39
full moon	2021-09-20	19:55
3rd quarter	2021-09-28	21:57

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	06:07	368,463 km
Apogee	2021-09-26	17:45	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 00:07
Venus	2021-09-09 22:09
Saturn	2021-09-16 22:37
Jupiter	2021-09-18 02:50

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	30 Monday	31 Tuesday	1Wednesday 32.6% illuminated Age: 23.8	2Thursday 23.9% illuminated Age: 24.7	3Friday 16% illuminated Age: 25.7	4Saturday 9.3% illuminated Age: 26.6	5Sunday 4.1% illuminated Age: 27.6
Week 36	6Monday 0.9% illuminated Age: 28.6	7Tuesday 0% illuminated Age: 0.1	8Wednesday 1.6% illuminated Age: 1.2	9Thursday 5.7% illuminated Age: 2.3	10Friday 12.3% illuminated Age: 3.4	11Saturday 20.9% illuminated Age: 4.5	12Sunday 31% illuminated Age: 5.6
Week 37	13Monday 42.1% illuminated Age: 6.6	14Tuesday 53.5% illuminated Age: 7.7	15Wednesday 64.7% illuminated Age: 8.8	16Thursday 75% illuminated Age: 9.8	17Friday 83.9% illuminated Age: 10.9	18Saturday 91.1% illuminated Age: 11.9	19Sunday 96.3% illuminated Age: 12.9
Week 38	20Monday 99.2% illuminated Age: 13.9	21Tuesday 100% illuminated Age: 14.9	22Wednesday 98.6% illuminated Age: 15.9	23Thursday 95.2% illuminated Age: 16.8	24Friday 90.2% illuminated Age: 17.8	25Saturday 83.8% illuminated Age: 18.7	26Sunday 76.2% illuminated Age: 19.6
Week 39	27Monday 67.7% illuminated Age: 20.5	28Tuesday 58.6% illuminated Age: 21.3	29Wednesday 49.1% illuminated Age: 22.2	30Thursday 39.5% illuminated Age: 23.1	1 Friday	2 Saturday	3 Sunday
	4 Monday	5 Tuesday	6 Wednesday	7 Thursday	8 Friday	9 Saturday	10 Sunday
	11 Monday	12 Tuesday	13 Wednesday	14 Thursday	15 Friday	16 Saturday	17 Sunday