Quarter ♈ Aries
Moon phase on 17 December 2026 Thursday is First Quarter, 8 days young Moon is in Pisces.Share this page: twitter facebook linkedin
First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 53% and growing larger. The 8 days young Moon is in ♓ Pisces.
* The exact date and time of this First Quarter phase is on 17 December 2026 at 05:43 UTC.
Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.
Lunar disc appears visually 5.3% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1850" and ∠1950".
Next Full Moon is the Cold Moon of December 2026 after 6 days on 24 December 2026 at 01:28.
There is medium ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at very acute angle, so their combined tidal force is moderate.
The Moon is 8 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 333 of Meeus index or 1286 from Brown series.
Length of current 333 lunation is 29 days, 19 hours and 33 minutes. This is the year's longest synodic month of 2026. It is 1 minute longer than next lunation 334 length.
Length of current synodic month is 6 hours and 48 minutes longer than the mean length of synodic month, but it is still 14 minutes shorter, compared to 21st century longest.
This lunation true anomaly is ∠159.4°. At the beginning of next synodic month true anomaly will be ∠184.3°. The length of upcoming synodic months will keep decreasing since the true anomaly gets closer to the value of New Moon at point of perigee (∠0° or ∠360°).
6 days after point of apogee on 11 December 2026 at 06:46 in ♑ Capricorn. The lunar orbit is getting closer, while the Moon is moving inward the Earth. It will keep this direction for the next 6 days, until it get to the point of next perigee on 24 December 2026 at 08:30 in ♋ Cancer.
Moon is 387 416 km (240 729 mi) away from Earth on this date. Moon moves closer next 6 days until perigee, when Earth-Moon distance will reach 356 650 km (221 612 mi).
2 days after its ascending node on 14 December 2026 at 13:04 in ♒ Aquarius, the Moon is following the northern part of its orbit for the next 9 days, until it will cross the ecliptic from North to South in descending node on 27 December 2026 at 07:55 in ♌ Leo.
2 days after beginning of current draconic month in ♒ Aquarius, the Moon is moving from the beginning to the first part of it.
7 days after previous South standstill on 9 December 2026 at 15:27 in ♐ Sagittarius, when Moon has reached southern declination of ∠-27.602°. Next 6 days the lunar orbit moves northward to face North declination of ∠27.620° in the next northern standstill on 23 December 2026 at 12:33 in ♊ Gemini.
After 6 days on 24 December 2026 at 01:28 in ♋ Cancer, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.