Lunar Calendar Month May 2017 (Costa Rica)

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 José, Costa Rica during May 2017.

Choose a country from the list to get relevant information:

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
1st quarter	2017-05-02	20:47
full moon	2017-05-10	15:42
3rd quarter	2017-05-18	18:33
new moon	2017-05-25	13:44

Apogee and perigee of the Moon

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

Position	Dates	Time	Distance	Notes
Apogee	2017-05-12	13:52	406,210 km
Perigee	2017-05-25	19:24	357,209 km	Maximum perigee 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
η-Aquariids	2017-05-05
η-Lyrids	2017-05-08

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	2017-05-02 12:23
Regulus	2017-05-04 03:49
Jupiter	2017-05-07 15:24
Saturn	2017-05-13 17:07
Venus	2017-05-22 06:32
Mercury	2017-05-23 19:20
Beehive	2017-05-29 19:50
Regulus	2017-05-31 10:08

Illumination of the Moon

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

May 2017
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 18	1Monday 29.6% illuminated Age:5.4	2Tuesday 40.4% illuminated Age:6.5	3Wednesday 51.4% illuminated Age:7.5	4Thursday 62% illuminated Age:8.5	5Friday 71.9% illuminated Age:9.5	6Saturday 80.6% illuminated Age:10.5	7Sunday 87.9% illuminated Age:11.4
Week 19	8Monday 93.5% illuminated Age:12.4	9Tuesday 97.5% illuminated Age:13.3	10Wednesday 99.6% illuminated Age:14.2	11Thursday 99.9% illuminated Age:15.1	12Friday 98.3% illuminated Age:16	13Saturday 95.1% illuminated Age:16.9	14Sunday 90.2% illuminated Age:17.8
Week 20	15Monday 83.8% illuminated Age:18.7	16Tuesday 76.1% illuminated Age:19.6	17Wednesday 67.4% illuminated Age:20.5	18Thursday 57.8% illuminated Age:21.4	19Friday 47.6% illuminated Age:22.4	20Saturday 37.3% illuminated Age:23.4	21Sunday 27.1% illuminated Age:24.4
Week 21	22Monday 17.7% illuminated Age:25.4	23Tuesday 9.7% illuminated Age:26.6	24Wednesday 3.8% illuminated Age:27.7	25Thursday 0.5% illuminated Age:28.9	26Friday 0.3% illuminated Age:0.5	27Saturday 3.1% illuminated Age:1.7	28Sunday 8.8% illuminated Age:2.8
Week 22	29Monday 16.7% illuminated Age:4	30Tuesday 26.1% illuminated Age:5	31Wednesday 36.4% illuminated Age:6.1	1Thursday	2Friday	3Saturday	4Sunday
	5Monday	6Tuesday	7Wednesday	8Thursday	9Friday	10Saturday	11Sunday
	12Monday	13Tuesday	14Wednesday	15Thursday	16Friday	17Saturday	18Sunday