Lunar Calendar Month October 2023 (Mongolia)

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 Ulan Bator, Mongolia during October 2023.

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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	2023-10-06	21:48
new moon	2023-10-15	01:55
1st quarter	2023-10-22	11:29
full moon	2023-10-29	04:24

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during October 2023.

Position	Dates	Time	Distance	Notes
Apogee	2023-10-10	11:43	405,425 km
Perigee	2023-10-26	10:54	364,872 km

Eclipses in October 2023

The following is information about eclipses occuring worldwide during October 2023. The eclipses listed here may be totally visible, partly visible or not visible in any part of Mongolia.

Type	Dates	Saros	Notes
solar eclipse	2023-10-15	134
lunar eclipse	2023-10-29	146

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
Jupiter	2023-10-02 11:16
Pleiades	2023-10-03 12:25
Pollux	2023-10-07 18:23
Antares	2023-10-18 21:17
Saturn	2023-10-24 15:52
Jupiter	2023-10-29 16:10
Pleiades	2023-10-30 22:30

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of October 2023.

October 2023
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 39	25 Monday	26 Tuesday	27 Wednesday	28 Thursday	29 Friday	30 Saturday	1Sunday 97.8% illuminated Age: 16.2
Week 40	2Monday 93% illuminated Age: 17.3	3Tuesday 86.2% illuminated Age: 18.3	4Wednesday 77.9% illuminated Age: 19.4	5Thursday 68.7% illuminated Age: 20.3	6Friday 59% illuminated Age: 21.3	7Saturday 49.2% illuminated Age: 22.2	8Sunday 39.6% illuminated Age: 23.1
Week 41	9Monday 30.5% illuminated Age: 24	10Tuesday 22.2% illuminated Age: 24.9	11Wednesday 14.9% illuminated Age: 25.8	12Thursday 8.8% illuminated Age: 26.7	13Friday 4.1% illuminated Age: 27.6	14Saturday 1.1% illuminated Age: 28.5	15Sunday 0% illuminated Age: 29.4
Week 42	16Monday 0.8% illuminated Age: 0.9	17Tuesday 3.7% illuminated Age: 1.8	18Wednesday 8.6% illuminated Age: 2.8	19Thursday 15.4% illuminated Age: 3.8	20Friday 23.9% illuminated Age: 4.8	21Saturday 33.8% illuminated Age: 5.8	22Sunday 44.6% illuminated Age: 6.9
Week 43	23Monday 55.9% illuminated Age: 7.9	24Tuesday 67.1% illuminated Age: 9	25Wednesday 77.5% illuminated Age: 10.1	26Thursday 86.5% illuminated Age: 11.2	27Friday 93.5% illuminated Age: 12.3	28Saturday 98.1% illuminated Age: 13.5	29Sunday 100% illuminated Age: 14.6
Week 44	30Monday 99.1% illuminated Age: 15.7	31Tuesday 95.8% illuminated Age: 16.7	1 Wednesday	2 Thursday	3 Friday	4 Saturday	5 Sunday
	6 Monday	7 Tuesday	8 Wednesday	9 Thursday	10 Friday	11 Saturday	12 Sunday