Lunar Calendar Month March 2021 (Puerto Rico)

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 San Juan, Puerto Rico during March 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
3rd quarter	2021-03-05	21:30
new moon	2021-03-13	06:21
1st quarter	2021-03-21	10:40
full moon	2021-03-28	14:48

Apogee and perigee of the Moon

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

Position	Dates	Time	Distance
Perigee	2021-03-02	01:20	365,421 km
Apogee	2021-03-18	01:05	405,252 km
Perigee	2021-03-30	02:13	360,310 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
Saturn	2021-03-09 19:02
Jupiter	2021-03-10 11:35
Mercury	2021-03-10 21:02
Mars	2021-03-19 13:48
Beehive	2021-03-24 05:58

Illumination of the Moon

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

March 2021
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 9	1Monday 95.6% illuminated Age:16.8	2Tuesday 89.4% illuminated Age:17.9	3Wednesday 81.1% illuminated Age:19	4Thursday 71.2% illuminated Age:20.1	5Friday 60.3% illuminated Age:21.2	6Saturday 48.9% illuminated Age:22.2	7Sunday 37.8% illuminated Age:23.3
Week 10	8Monday 27.5% illuminated Age:24.3	9Tuesday 18.4% illuminated Age:25.4	10Wednesday 10.9% illuminated Age:26.4	11Thursday 5.3% illuminated Age:27.4	12Friday 1.6% illuminated Age:28.3	13Saturday 0.1% illuminated Age:29.3	14Sunday 0.5% illuminated Age:0.7
Week 11	15Monday 2.9% illuminated Age:1.6	16Tuesday 7% illuminated Age:2.5	17Wednesday 12.7% illuminated Age:3.4	18Thursday 19.6% illuminated Age:4.3	19Friday 27.6% illuminated Age:5.2	20Saturday 36.4% illuminated Age:6.1	21Sunday 45.8% illuminated Age:7
Week 12	22Monday 55.5% illuminated Age:7.9	23Tuesday 65.3% illuminated Age:8.8	24Wednesday 74.7% illuminated Age:9.8	25Thursday 83.4% illuminated Age:10.8	26Friday 90.7% illuminated Age:11.9	27Saturday 96.3% illuminated Age:12.9	28Sunday 99.4% illuminated Age:14.1
Week 13	29Monday 99.8% illuminated Age:15.2	30Tuesday 97.2% illuminated Age:16.3	31Wednesday 91.9% illuminated Age:17.5	1Thursday	2Friday	3Saturday	4Sunday
	5Monday	6Tuesday	7Wednesday	8Thursday	9Friday	10Saturday	11Sunday
	12Monday	13Tuesday	14Wednesday	15Thursday	16Friday	17Saturday	18Sunday