Lunar Calendar Month May 2027 (Finland)

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 Helsinki, Finland during May 2027.

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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	2027-05-06	13:58
1st quarter	2027-05-13	07:44
full moon	2027-05-20	13:59
3rd quarter	2027-05-28	16:58

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during May 2027.

Position	Dates	Time	Distance	Notes
Perigee	2027-05-09	23:09	366,634 km
Apogee	2027-05-25	18:14	404,800 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
Venus	2027-05-04 17:18
Beehive	2027-05-12 06:32
Jupiter	2027-05-13 01:49
Regulus	2027-05-13 21:57
Mars	2027-05-13 22:34
Antares	2027-05-21 10:08

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of May 2027.

May 2027
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 17	26 Monday	27 Tuesday	28 Wednesday	29 Thursday	30 Friday	1Saturday 31.1% illuminated Age: 24	2Sunday 22.3% illuminated Age: 24.9
Week 18	3Monday 14.5% illuminated Age: 25.9	4Tuesday 8% illuminated Age: 26.8	5Wednesday 3.1% illuminated Age: 27.9	6Thursday 0.4% illuminated Age: 28.9	7Friday 0.2% illuminated Age: 0.4	8Saturday 2.7% illuminated Age: 1.5	9Sunday 7.7% illuminated Age: 2.6
Week 19	10Monday 15.2% illuminated Age: 3.8	11Tuesday 24.5% illuminated Age: 4.9	12Wednesday 35.1% illuminated Age: 6	13Thursday 46.4% illuminated Age: 7	14Friday 57.7% illuminated Age: 8.1	15Saturday 68.5% illuminated Age: 9.2	16Sunday 78.2% illuminated Age: 10.2
Week 20	17Monday 86.5% illuminated Age: 11.2	18Tuesday 92.9% illuminated Age: 12.2	19Wednesday 97.4% illuminated Age: 13.2	20Thursday 99.6% illuminated Age: 14.2	21Friday 99.8% illuminated Age: 15.2	22Saturday 98% illuminated Age: 16.1	23Sunday 94.3% illuminated Age: 17
Week 21	24Monday 89% illuminated Age: 17.9	25Tuesday 82.4% illuminated Age: 18.8	26Wednesday 74.6% illuminated Age: 19.7	27Thursday 66% illuminated Age: 20.6	28Friday 56.7% illuminated Age: 21.5	29Saturday 47.1% illuminated Age: 22.4	30Sunday 37.4% illuminated Age: 23.3
Week 22	31Monday 27.9% illuminated Age: 24.3	1 Tuesday	2 Wednesday	3 Thursday	4 Friday	5 Saturday	6 Sunday
	7 Monday	8 Tuesday	9 Wednesday	10 Thursday	11 Friday	12 Saturday	13 Sunday