Lunar Calendar Month October 2021 (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 October 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	2021-10-06	05:05
1st quarter	2021-10-12	21:25
full moon	2021-10-20	08:57
3rd quarter	2021-10-28	14:05

Apogee and perigee of the Moon

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

Position	Dates	Time	Distance	Notes
Perigee	2021-10-08	11:29	363,387 km
Apogee	2021-10-24	09:31	405,614 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	2021-10-01 07:08
Venus	2021-10-09 12:36
Saturn	2021-10-14 01:12
Jupiter	2021-10-15 03:58
Pollux	2021-10-27 14:40
Beehive	2021-10-28 15:32

Illumination of the Moon

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

October 2021
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 39	27Monday	28Tuesday	29Wednesday	30Thursday	1Friday 29.3% illuminated Age:24.2	2Saturday 20.5% illuminated Age:25.1	3Sunday 12.7% illuminated Age:26.1
Week 40	4Monday 6.4% illuminated Age:27.1	5Tuesday 2% illuminated Age:28.2	6Wednesday 0.1% illuminated Age:29.3	7Thursday 0.8% illuminated Age:0.9	8Friday 4.4% illuminated Age:2	9Saturday 10.6% illuminated Age:3.1	10Sunday 19% illuminated Age:4.2
Week 41	11Monday 29% illuminated Age:5.4	12Tuesday 40% illuminated Age:6.4	13Wednesday 51.3% illuminated Age:7.5	14Thursday 62.2% illuminated Age:8.5	15Friday 72.4% illuminated Age:9.6	16Saturday 81.4% illuminated Age:10.6	17Sunday 88.8% illuminated Age:11.6
Week 42	18Monday 94.4% illuminated Age:12.5	19Tuesday 98.1% illuminated Age:13.5	20Wednesday 99.9% illuminated Age:14.4	21Thursday 99.6% illuminated Age:15.3	22Friday 97.5% illuminated Age:16.2	23Saturday 93.7% illuminated Age:17.1	24Sunday 88.4% illuminated Age:18
Week 43	25Monday 81.6% illuminated Age:18.9	26Tuesday 73.8% illuminated Age:19.8	27Wednesday 65% illuminated Age:20.7	28Thursday 55.6% illuminated Age:21.6	29Friday 45.8% illuminated Age:22.5	30Saturday 35.9% illuminated Age:23.5	31Sunday 26.2% illuminated Age:24.5
	1Monday	2Tuesday	3Wednesday	4Thursday	5Friday	6Saturday	7Sunday
	8Monday	9Tuesday	10Wednesday	11Thursday	12Friday	13Saturday	14Sunday