Lunar Calendar Month May 2026 (Iran)

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 Tehran, Iran during May 2026.

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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	2026-05-01	21:53
3rd quarter	2026-05-10	01:40
new moon	2026-05-17	00:31
1st quarter	2026-05-23	15:41
full moon	2026-05-31	13:15

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during May 2026.

Position	Dates	Time	Distance	Notes
Apogee	2026-05-05	03:02	405,841 km
Perigee	2026-05-17	18:19	358,073 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
Antares	2026-05-04 06:50
Venus	2026-05-19 06:20
Jupiter	2026-05-20 17:09
Beehive	2026-05-21 19:09
Regulus	2026-05-23 11:10
Spica	2026-05-27 18:39
Antares	2026-05-31 13:02

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of May 2026.

May 2026
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 18	27 Monday	28 Tuesday	29 Wednesday	30 Thursday	1Friday 99.2% illuminated Age: 13.9	2Saturday 100% illuminated Age: 14.9	3Sunday 98.9% illuminated Age: 15.8
Week 19	4Monday 96% illuminated Age: 16.7	5Tuesday 91.4% illuminated Age: 17.6	6Wednesday 85.4% illuminated Age: 18.4	7Thursday 78.1% illuminated Age: 19.3	8Friday 69.7% illuminated Age: 20.2	9Saturday 60.5% illuminated Age: 21.2	10Sunday 50.7% illuminated Age: 22.1
Week 20	11Monday 40.6% illuminated Age: 23	12Tuesday 30.6% illuminated Age: 24	13Wednesday 21.1% illuminated Age: 25	14Thursday 12.7% illuminated Age: 26.1	15Friday 6% illuminated Age: 27.2	16Saturday 1.6% illuminated Age: 28.3	17Sunday 0% illuminated Age: 29.5
Week 21	18Monday 1.5% illuminated Age: 1.1	19Tuesday 5.9% illuminated Age: 2.3	20Wednesday 12.9% illuminated Age: 3.5	21Thursday 21.9% illuminated Age: 4.6	22Friday 32.1% illuminated Age: 5.7	23Saturday 42.9% illuminated Age: 6.7	24Sunday 53.7% illuminated Age: 7.7
Week 22	25Monday 64% illuminated Age: 8.7	26Tuesday 73.5% illuminated Age: 9.7	27Wednesday 81.8% illuminated Age: 10.6	28Thursday 88.7% illuminated Age: 11.5	29Friday 94.1% illuminated Age: 12.5	30Saturday 97.8% illuminated Age: 13.4	31Sunday 99.7% illuminated Age: 14.3
	1 Monday	2 Tuesday	3 Wednesday	4 Thursday	5 Friday	6 Saturday	7 Sunday
	8 Monday	9 Tuesday	10 Wednesday	11 Thursday	12 Friday	13 Saturday	14 Sunday