Lunar Calendar Month May 2021 (VietNam)

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 Hanoi, VietNam during May 2021.

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
3rd quarter	2021-05-04	02:50
new moon	2021-05-12	02:00
1st quarter	2021-05-20	02:13
full moon	2021-05-26	18:14

Apogee and perigee of the Moon

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

Position	Dates	Time	Distance	Notes
Apogee	2021-05-12	04:55	406,511 km	Maximum apogee in 2021!
Perigee	2021-05-26	08:53	357,309 km

Eclipses in May 2021

The following is information about eclipses occuring worldwide during May 2021. The eclipses listed here may be totally visible, partly visible or not visible in any part of VietNam.

Type	Dates	Saros	Notes
lunar eclipse	2021-05-26	121

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
Saturn	2021-05-04 00:02
Jupiter	2021-05-05 04:00
Mercury	2021-05-14 00:59
Mars	2021-05-16 11:47
Beehive	2021-05-18 08:08
Saturn	2021-05-31 08:22

Illumination of the Moon

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

May 2021
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 17	26Monday	27Tuesday	28Wednesday	29Thursday	30Friday	1Saturday 82.2% illuminated Age:18.9	2Sunday 72.5% illuminated Age:20
Week 18	3Monday 62% illuminated Age:21	4Tuesday 51.3% illuminated Age:22	5Wednesday 40.8% illuminated Age:23	6Thursday 31% illuminated Age:24	7Friday 22.2% illuminated Age:24.9	8Saturday 14.6% illuminated Age:25.8	9Sunday 8.5% illuminated Age:26.8
Week 19	10Monday 3.9% illuminated Age:27.7	11Tuesday 1.1% illuminated Age:28.6	12Wednesday 0% illuminated Age:29.5	13Thursday 0.7% illuminated Age:0.8	14Friday 3.3% illuminated Age:1.7	15Saturday 7.5% illuminated Age:2.6	16Sunday 13.4% illuminated Age:3.5
Week 20	17Monday 20.6% illuminated Age:4.4	18Tuesday 29.2% illuminated Age:5.4	19Wednesday 38.8% illuminated Age:6.3	20Thursday 49.1% illuminated Age:7.3	21Friday 59.8% illuminated Age:8.3	22Saturday 70.3% illuminated Age:9.4	23Sunday 80.2% illuminated Age:10.4
Week 21	24Monday 88.8% illuminated Age:11.6	25Tuesday 95.3% illuminated Age:12.7	26Wednesday 99.1% illuminated Age:13.9	27Thursday 99.9% illuminated Age:15	28Friday 97.7% illuminated Age:16.2	29Saturday 92.6% illuminated Age:17.4	30Sunday 85.3% illuminated Age:18.5
Week 22	31Monday 76.4% illuminated Age:19.5	1Tuesday	2Wednesday	3Thursday	4Friday	5Saturday	6Sunday
	7Monday	8Tuesday	9Wednesday	10Thursday	11Friday	12Saturday	13Sunday