Lunar Calendar Month March 2018 (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 2018.

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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	2018-03-01	20:51
3rd quarter	2018-03-09	07:20
new moon	2018-03-17	09:11
1st quarter	2018-03-24	11:35
full moon	2018-03-31	08:37

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during March 2018.

Position	Dates	Time	Distance	Notes
Apogee	2018-03-11	05:15	404,681 km
Perigee	2018-03-26	13:19	369,103 km

Meteor Activity

Active meteor showers this month and their peak days. For more information, see the meteor shower calendar 2018.

Name	Peak Day
γ-Normids	2018-03-14

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
Regulus	2018-03-01 01:09
Jupiter	2018-03-07 02:57
Mars	2018-03-09 20:37
Saturn	2018-03-10 22:37
Venus	2018-03-18 15:07
Aldebaran	2018-03-22 18:33
Beehive	2018-03-26 20:52
Regulus	2018-03-28 09:38

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of March 2018.

March 2018
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 9	26Monday	27Tuesday	28Wednesday	1Thursday 99% illuminated Age:13.8	2Friday 100% illuminated Age:14.9	3Saturday 98.3% illuminated Age:16	4Sunday 94.2% illuminated Age:17.1
Week 10	5Monday 88.1% illuminated Age:18.1	6Tuesday 80.5% illuminated Age:19.1	7Wednesday 71.9% illuminated Age:20	8Thursday 62.6% illuminated Age:20.9	9Friday 53.1% illuminated Age:21.9	10Saturday 43.6% illuminated Age:22.7	11Sunday 34.4% illuminated Age:23.6
Week 11	12Monday 25.8% illuminated Age:24.5	13Tuesday 17.9% illuminated Age:25.4	14Wednesday 11.2% illuminated Age:26.3	15Thursday 5.8% illuminated Age:27.3	16Friday 2% illuminated Age:28.2	17Saturday 0.2% illuminated Age:29.2	18Sunday 0.4% illuminated Age:0.6
Week 12	19Monday 2.9% illuminated Age:1.6	20Tuesday 7.7% illuminated Age:2.6	21Wednesday 14.6% illuminated Age:3.7	22Thursday 23.3% illuminated Age:4.7	23Friday 33.4% illuminated Age:5.8	24Saturday 44.5% illuminated Age:6.9	25Sunday 55.9% illuminated Age:7.9
Week 13	26Monday 67% illuminated Age:9	27Tuesday 77.3% illuminated Age:10.1	28Wednesday 86.2% illuminated Age:11.2	29Thursday 93.1% illuminated Age:12.3	30Friday 97.7% illuminated Age:13.3	31Saturday 99.9% illuminated Age:14.4	1Sunday
	2Monday	3Tuesday	4Wednesday	5Thursday	6Friday	7Saturday	8Sunday
	9Monday	10Tuesday	11Wednesday	12Thursday	13Friday	14Saturday	15Sunday