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Sunday · 27 September 2026 · 10:00

Moon phase today: waning gibbous, 99%

One day after the full moon. The disc still looks round and the night stays bright. The last quarter is in 6 days.

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Key facts · 27 September 2026
  • On 27 September 2026 the moon is a waning gibbous, 99% illuminated.
  • The last full moon was on 26 September 2026.
  • The next last quarter is on 3 October 2026.
  • A lunar month, from one new moon to the next, lasts 29.53 days on average.
  • Moon phases are the same everywhere on Earth at the same instant; only the local time and the tilt of the crescent differ.

What is a moon phase?

A moon phase is the shape of the sunlit part of the Moon as seen from Earth. It changes as the Moon orbits the Earth every 29.53 days: from new moon, when the lit side faces away, through first quarter and full moon to last quarter and back. The phase times on this page are computed with the algorithms of Jean Meeus and agree with almanacs to the minute.

The next 7 nights

Moon calendar

September 2026

Illumination at noon, Europe/Vilnius

Full moon dates 2026

DateTime (UTC)Traditional name
Sat 3 Jan10:02Wolf Moonpassed
Mon 2 Feb22:09Snow Moonpassed
Tue 3 Mar11:37Worm Moonpassed
Thu 2 Apr02:12Pink Moonpassed
Fri 1 May17:23Flower Moonpassed
Sun 31 May08:45Blue Moonpassed
Tue 30 Jun23:56Strawberry Moonpassed
Wed 29 Jul14:35Buck Moonpassed
Fri 28 Aug04:18Sturgeon Moonpassed
Sat 26 Sep16:49Harvest Moonpassed
Mon 26 Oct04:11Hunter’s Moonnext
Tue 24 Nov14:53Beaver Moon
Thu 24 Dec01:28Cold Moon

New moon dates 2026

DateTime (UTC)
Sun 18 Jan19:52passed
Tue 17 Feb12:01passed
Thu 19 Mar01:23passed
Fri 17 Apr11:51passed
Sat 16 May20:01passed
Mon 15 Jun02:54passed
Tue 14 Jul09:43passed
Wed 12 Aug17:36passed
Fri 11 Sep03:26passed
Sat 10 Oct15:50next
Mon 9 Nov07:02
Wed 9 Dec00:51

The eight moon phases explained

Four principal phases are exact instants; the four in between are the days that connect them.

New moonMoon between Earth and Sun; not visible.
Waxing crescentA thin sliver grows on the right after sunset.
First quarterHalf lit; highest at sunset.
Waxing gibbousMore than half lit and still growing.
Full moonFully lit; rises at sunset, sets at sunrise.
Waning gibbousMore than half lit and shrinking; rises late in the evening.
Last quarterHalf lit; highest at sunrise.
Waning crescentA thin sliver before dawn.

What a waning moon is traditionally used for finishing

Haircut calendarFolk calendars place trims that should grow back slowly in the waning half of the month.
Clearing and sortingThe two weeks after a full moon are traditionally kept for cleaning, pruning and closing what is open.
Journal promptWhat can I stop carrying before the next new moon?

Eclipses

12 Aug 2026Total solar eclipseGreenland, Iceland, Spain
28 Aug 2026Partial lunar eclipseAmericas, Europe, Africa
6 Feb 2027Annular solar eclipseSouth America, Atlantic, Africa
20 Feb 2027Penumbral lunar eclipseAmericas, Europe, Africa
2 Aug 2027Total solar eclipseSouthern Spain, North Africa, Arabia

Questions people ask

What phase is the moon in today?

The phase and illumination for today are in the first line of this page; they are calculated for the current time in the Europe/Vilnius zone.

When is the next full moon?

The next phases strip shows the date and time of the next full moon, and the table below lists every full moon of the year.

What is a moon day?

A moon day counts the days since the last new moon: the first moon day starts at the new moon, the fifteenth around the full moon. The count on this page is the whole number of days since the last new moon plus one.

Is the moon waxing or waning?

Waxing means the lit part is growing (from new moon to full moon); waning means it is shrinking (from full moon to new moon). In the northern hemisphere a waxing moon is lit on the right.

Why does the full moon time differ between sources?

The instant of full moon is the same everywhere; sources differ only in the time zone they print. This page shows UTC in the tables and local time in the strip.

Does the full moon affect sleep?

Several studies found that people fall asleep later and sleep less in the days around the full moon; others found no effect. Where it appears, the difference is small.

How are the phase times calculated?

With the algorithms published by Jean Meeus in Astronomical Algorithms (1998), including the periodic terms, which give the phase instants to about one minute.

Sources
  1. Jean Meeus, Astronomical Algorithms, 2nd ed., Willmann-Bell, 1998, chapters 48 and 49.
  2. NASA Eclipse Web Site (eclipse dates and visibility).
How this page is made

Numbers update through the day from public sources. The text for each day is written from that day’s data and checked by the editor. Every past day keeps its own page in the archive.

The moon is one of four signals

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