Lunar Calendar Month April 2018 (Japan)

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 Tokyo, Japan during April 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
3rd quarter	2018-04-08	16:17
new moon	2018-04-16	10:57
1st quarter	2018-04-23	06:45
full moon	2018-04-30	09:58

Apogee and perigee of the Moon

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

Position	Dates	Time	Distance	Notes
Apogee	2018-04-08	14:33	404,144 km
Perigee	2018-04-20	23:46	368,712 km

Meteor Activity

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

Name	Peak Day
Lyrids	2018-04-22
π-Puppids	2018-04-23

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	2018-04-03 23:14
Saturn	2018-04-07 21:50
Mars	2018-04-08 03:15
Venus	2018-04-18 04:29
Aldebaran	2018-04-19 13:45
Beehive	2018-04-23 15:17
Regulus	2018-04-25 04:39

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 30 days of April 2018.

April 2018
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 13	26Monday	27Tuesday	28Wednesday	29Thursday	30Friday	31Saturday	1Sunday 100% illuminated Age:14.9
Week 14	2Monday 98.5% illuminated Age:15.9	3Tuesday 94.9% illuminated Age:16.9	4Wednesday 89.5% illuminated Age:17.9	5Thursday 82.5% illuminated Age:18.8	6Friday 74.5% illuminated Age:19.7	7Saturday 65.8% illuminated Age:20.6	8Sunday 56.5% illuminated Age:21.5
Week 15	9Monday 47.1% illuminated Age:22.4	10Tuesday 37.7% illuminated Age:23.3	11Wednesday 28.7% illuminated Age:24.2	12Thursday 20.3% illuminated Age:25.1	13Friday 12.9% illuminated Age:26.1	14Saturday 6.9% illuminated Age:27	15Sunday 2.5% illuminated Age:28
Week 16	16Monday 0.3% illuminated Age:29.1	17Tuesday 0.4% illuminated Age:0.6	18Wednesday 3% illuminated Age:1.6	19Thursday 8.2% illuminated Age:2.7	20Friday 15.6% illuminated Age:3.8	21Saturday 24.9% illuminated Age:4.9	22Sunday 35.5% illuminated Age:6
Week 17	23Monday 46.8% illuminated Age:7.1	24Tuesday 58.2% illuminated Age:8.2	25Wednesday 69% illuminated Age:9.2	26Thursday 78.9% illuminated Age:10.3	27Friday 87.2% illuminated Age:11.3	28Saturday 93.5% illuminated Age:12.4	29Sunday 97.8% illuminated Age:13.4
Week 18	30Monday 99.8% illuminated Age:14.4	1Tuesday	2Wednesday	3Thursday	4Friday	5Saturday	6Sunday
	7Monday	8Tuesday	9Wednesday	10Thursday	11Friday	12Saturday	13Sunday