Moon phases for 2031
There are 12 New Moons and 13 Full Moons in 2031. The first New Moon is on 23 January 2031 at 04:30 UT and the first Full Moon is on 8 January 2031 at 18:25 UT. Every time is Universal Time.
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- New Moons12 in 2031
- Full Moons13 in 2031
- First New Moon23 January 2031
- First Full Moon8 January 2031
- Last Full Moon28 December 2031
- Blue Moon30 September 2031
January 2031 Moon phases
- Wednesday 8 January 203118:25 UTFull Moon at 18°15′ Cancer
- Thursday 16 January 203112:47 UTLast Quarter at 26°10′ Libra
- Thursday 23 January 203104:30 UTNew Moon at 2°56′ Aquarius
- Thursday 30 January 203107:42 UTFirst Quarter at 10°12′ Taurus
February 2031 Moon phases
- Friday 7 February 203112:46 UTFull Moon at 18°32′ Leo
- Friday 14 February 203122:49 UTLast Quarter at 26°02′ Scorpio
- Friday 21 February 203115:48 UTNew Moon at 2°48′ Pisces
March 2031 Moon phases
- Saturday 1 March 203104:01 UTFirst Quarter at 10°21′ Gemini
- Sunday 9 March 203104:29 UTFull Moon at 18°23′ Virgo
- Sunday 16 March 203106:35 UTLast Quarter at 25°28′ Sagittarius
- Sunday 23 March 203103:49 UTNew Moon at 2°19′ Aries
- Monday 31 March 203100:32 UTFirst Quarter at 10°06′ Cancer
April 2031 Moon phases
- Monday 7 April 203117:21 UTFull Moon at 17°41′ Libra
- Monday 14 April 203112:58 UTLast Quarter at 24°23′ Capricorn
- Monday 21 April 203116:57 UTNew Moon at 1°24′ Taurus
- Tuesday 29 April 203119:19 UTFirst Quarter at 9°17′ Leo
May 2031 Moon phases
- Wednesday 7 May 203103:40 UTFull Moon at 16°24′ Scorpio
- Tuesday 13 May 203119:07 UTLast Quarter at 22°50′ Aquarius
- Wednesday 21 May 203107:17 UTNew Moon at 0°04′ Gemini
- Thursday 29 May 203111:19 UTFirst Quarter at 7°55′ Virgo
June 2031 Moon phases
- Thursday 5 June 203111:58 UTFull Moon at 14°39′ Sagittarius
- Thursday 12 June 203102:20 UTLast Quarter at 20°57′ Pisces
- Thursday 19 June 203122:24 UTNew Moon at 28°26′ Gemini
- Saturday 28 June 203100:18 UTFirst Quarter at 6°09′ Libra
July 2031 Moon phases
- Friday 4 July 203119:01 UTFull Moon at 12°37′ Capricorn
- Friday 11 July 203111:50 UTLast Quarter at 19°00′ Aries
- Saturday 19 July 203113:40 UTNew Moon at 26°43′ Cancer
- Sunday 27 July 203110:34 UTFirst Quarter at 4°13′ Scorpio
August 2031 Moon phases
- Sunday 3 August 203101:45 UTFull Moon at 10°34′ Aquarius
- Sunday 10 August 203100:24 UTLast Quarter at 17°13′ Taurus
- Monday 18 August 203104:32 UTNew Moon at 25°04′ Leo
- Monday 25 August 203118:39 UTFirst Quarter at 2°22′ Sagittarius
September 2031 Moon phases
- Monday 1 September 203109:21 UTFull Moon at 8°46′ Pisces
- Monday 8 September 203116:15 UTLast Quarter at 15°49′ Gemini
- Tuesday 16 September 203118:47 UTNew Moon at 23°42′ Virgo
- Wednesday 24 September 203101:20 UTFirst Quarter at 0°49′ Capricorn
- Tuesday 30 September 203118:58 UTFull Moon at 7°25′ Aries
October 2031 Moon phases
- Wednesday 8 October 203110:51 UTLast Quarter at 14°58′ Cancer
- Thursday 16 October 203108:21 UTNew Moon at 22°46′ Libra
- Thursday 23 October 203107:36 UTFirst Quarter at 29°41′ Capricorn
- Thursday 30 October 203107:33 UTFull Moon at 6°40′ Taurus
November 2031 Moon phases
- Friday 7 November 203107:03 UTLast Quarter at 14°40′ Leo
- Friday 14 November 203121:10 UTNew Moon at 22°17′ Scorpio
- Friday 21 November 203114:45 UTFirst Quarter at 29°05′ Aquarius
- Friday 28 November 203123:18 UTFull Moon at 6°31′ Gemini
December 2031 Moon phases
- Sunday 7 December 203103:20 UTLast Quarter at 14°48′ Virgo
- Sunday 14 December 203109:06 UTNew Moon at 22°09′ Sagittarius
- Sunday 21 December 203100:00 UTFirst Quarter at 28°53′ Pisces
- Sunday 28 December 203117:33 UTFull Moon at 6°46′ Cancer
How the phases are defined
A New Moon is the moment the Moon and the Sun share the same ecliptic longitude. A Full Moon is when they are 180° apart. First Quarter and Last Quarter are 90° and 270° from the Sun. Each time above is the exact minute the angle is reached, and the sign and degree are the Moon's own position at that minute.
What these dates are worth
Every time on this page is computed by the engine that casts the charts, not copied from a table. All times are Universal Time (UT), so a date can fall a day either side of your own clock: add your time zone's offset to get local time. The Moon is checked against NASA and JPL values and the planets against published station and ingress dates; the table of what Umbriel checks, and how close it comes is public. Umbriel is for reflection and self-understanding, not prediction.
Retrograde dates 2031 · Ephemeris 2031 · Moon phase calendar · Sky events ahead