Lunar Calendar Month October 2017 (Portugal)

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 Lisboa, Portugal during October 2017.

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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	2017-10-05	19:40
3rd quarter	2017-10-12	13:25
new moon	2017-10-19	20:12
1st quarter	2017-10-27	23:22

Apogee and perigee of the Moon

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

Position	Dates	Time	Distance	Notes
Perigee	2017-10-09	06:52	366,857 km
Apogee	2017-10-25	03:26	405,150 km

Meteor Activity

Active meteor showers this month and their peak days. For more information, see the meteor shower calendar 2017.

Name	Peak Day
S. Taurids	2017-10-10
Orionids	2017-10-21
Draconids	2017-10-08
δ-Aurigids	2017-10-11
ε-Geminids	2017-10-18
Leonis Minorids	2017-10-24

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
Aldebaran	2017-10-09 19:05
Beehive	2017-10-13 21:29
Regulus	2017-10-15 11:54
Mars	2017-10-17 11:04
Venus	2017-10-18 01:21
Saturn	2017-10-24 12:54

Illumination of the Moon

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

October 2017
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 39	25Monday	26Tuesday	27Wednesday	28Thursday	29Friday	30Saturday	1Sunday 76% illuminated Age:10
Week 40	2Monday 84% illuminated Age:10.9	3Tuesday 90.8% illuminated Age:11.9	4Wednesday 96% illuminated Age:12.9	5Thursday 99.2% illuminated Age:13.9	6Friday 100% illuminated Age:15	7Saturday 98.2% illuminated Age:16	8Sunday 93.7% illuminated Age:17.1
Week 41	9Monday 86.9% illuminated Age:18.2	10Tuesday 78% illuminated Age:19.3	11Wednesday 67.7% illuminated Age:20.4	12Thursday 56.6% illuminated Age:21.5	13Friday 45.2% illuminated Age:22.6	14Saturday 34.2% illuminated Age:23.7	15Sunday 24.2% illuminated Age:24.7
Week 42	16Monday 15.5% illuminated Age:25.7	17Tuesday 8.5% illuminated Age:26.7	18Wednesday 3.6% illuminated Age:27.7	19Thursday 0.7% illuminated Age:28.7	20Friday 0% illuminated Age:0.2	21Saturday 1.4% illuminated Age:1.1	22Sunday 4.6% illuminated Age:2
Week 43	23Monday 9.5% illuminated Age:2.9	24Tuesday 15.8% illuminated Age:3.8	25Wednesday 23.3% illuminated Age:4.7	26Thursday 31.7% illuminated Age:5.6	27Friday 40.8% illuminated Age:6.5	28Saturday 50.3% illuminated Age:7.4	29Sunday 60% illuminated Age:8.3
Week 43	30Monday 69.9% illuminated Age:9.3	31Tuesday 78.9% illuminated Age:10.3	1Wednesday	2Thursday	3Friday	4Saturday	5Sunday
	6Monday	7Tuesday	8Wednesday	9Thursday	10Friday	11Saturday	12Sunday