Lunar Calendar Month July 2025 (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 July 2025.

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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
1st quarter	2025-07-03	02:30
full moon	2025-07-11	03:37
3rd quarter	2025-07-18	07:37
new moon	2025-07-25	02:11

Apogee and perigee of the Moon

The following table shows the dates of perigee and apogee of the Moon during July 2025.

Position	Dates	Time	Distance	Notes
Apogee	2025-07-05	09:30	404,626 km
Perigee	2025-07-20	20:54	368,046 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
Spica	2025-07-04 04:39
Antares	2025-07-08 00:37
Saturn	2025-07-16 17:19
Pleiades	2025-07-20 17:27
Jupiter	2025-07-23 11:20
Regulus	2025-07-27 02:44
Mars	2025-07-29 02:45
Spica	2025-07-31 12:45

Illumination of the Moon

The following table depicts the illumination of the Moon, calculated at 00:00, throughtout the 31 days of July 2025.

July 2025
w	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
Week 27	30 Monday	1Tuesday 30% illuminated Age: 5.4	2Wednesday 39.4% illuminated Age: 6.4	3Thursday 49% illuminated Age: 7.3	4Friday 58.6% illuminated Age: 8.2	5Saturday 67.7% illuminated Age: 9.1	6Sunday 76.2% illuminated Age: 10
Week 28	7Monday 83.8% illuminated Age: 10.9	8Tuesday 90.3% illuminated Age: 11.8	9Wednesday 95.3% illuminated Age: 12.7	10Thursday 98.6% illuminated Age: 13.6	11Friday 100% illuminated Age: 14.6	12Saturday 99.2% illuminated Age: 15.6	13Sunday 96.3% illuminated Age: 16.6
Week 29	14Monday 91.1% illuminated Age: 17.6	15Tuesday 83.9% illuminated Age: 18.6	16Wednesday 75% illuminated Age: 19.7	17Thursday 64.7% illuminated Age: 20.7	18Friday 53.6% illuminated Age: 21.8	19Saturday 42.1% illuminated Age: 22.9	20Sunday 31% illuminated Age: 24
Week 30	21Monday 20.9% illuminated Age: 25.1	22Tuesday 12.2% illuminated Age: 26.2	23Wednesday 5.7% illuminated Age: 27.3	24Thursday 1.6% illuminated Age: 28.4	25Friday 0% illuminated Age: 29.4	26Saturday 1% illuminated Age: 0.9	27Sunday 4.3% illuminated Age: 2
Week 31	28Monday 9.5% illuminated Age: 3	29Tuesday 16.3% illuminated Age: 3.9	30Wednesday 24.3% illuminated Age: 4.8	31Thursday 33.1% illuminated Age: 5.8	1 Friday	2 Saturday	3 Sunday
	4 Monday	5 Tuesday	6 Wednesday	7 Thursday	8 Friday	9 Saturday	10 Sunday
	11 Monday	12 Tuesday	13 Wednesday	14 Thursday	15 Friday	16 Saturday	17 Sunday