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Moon calendar · calculated, not copied

Moon Calendar for September 2026

Every phase of September 2026 day by day, with the exact moment of each new and full moon, the sign the Moon is travelling through, and the void-of-course windows in between.

🕓 Times shown in UTC. We calculate in UTC; your browser converts.

New moon and full moon in September 2026

Moon phases day by day

Each row is read at 12:00 UTC on that date — a calendar day has one icon, but the Moon moves through it, so a day near a phase change can read either way by a few hours. 19 of 30 days carry a void-of-course window; they are marked in the last column and listed in full below.

Day Phase Lit Moon in Void
1 Tue Waning Gibbous 80% Taurus void
2 Wed Waning Gibbous 70% Taurus void
3 Thu Last Quarter 60% Gemini void
4 Fri Last Quarter 48% Gemini —
5 Sat Last Quarter 37% Gemini void
6 Sun Waning Crescent 26% Cancer —
7 Mon Waning Crescent 17% Cancer void
8 Tue Waning Crescent 9% Leo —
9 Wed New Moon 3% Leo void
10 Thu New Moon 1% Virgo —
11 Fri New Moon 0% Virgo void
12 Sat New Moon 2% Libra —
13 Sun Waxing Crescent 6% Libra void
14 Mon Waxing Crescent 12% Scorpio void
15 Tue Waxing Crescent 20% Scorpio —
16 Wed Waxing Crescent 28% Scorpio void
17 Thu First Quarter 37% Sagittarius —
18 Fri First Quarter 47% Sagittarius void
19 Sat First Quarter 56% Capricorn void
20 Sun First Quarter 65% Capricorn —
21 Mon Waxing Gibbous 74% Capricorn void
22 Tue Waxing Gibbous 82% Aquarius —
23 Wed Waxing Gibbous 89% Aquarius void
24 Thu Waxing Gibbous 95% Pisces void
25 Fri Full Moon 98% Pisces —
26 Sat Full Moon 100% Aries void
27 Sun Full Moon 99% Aries —
28 Mon Waning Gibbous 96% Aries void
29 Tue Waning Gibbous 90% Taurus void
30 Wed Waning Gibbous 82% Taurus void

Void of course Moon in September 2026

Each window runs from the Moon's last exact aspect to a planet until it crosses into the next sign. Check the Moon right now if that is the question you actually came with.

From Until Moon in Last aspect
Aries Moon conjunction Venus
Taurus Moon sextile Mercury
Gemini Moon sextile Venus
Cancer Moon square Venus
Leo Moon sextile Venus
Virgo Moon sextile Mars
Libra Moon square Mars
Scorpio Moon sextile the Sun
Sagittarius Moon square the Sun
Capricorn Moon sextile the Sun
Aquarius Moon sextile Mercury
Pisces Moon sextile Mars
Aries Moon conjunction Mercury
Taurus Moon square Jupiter

How to read this month

A lunar month is about 29.5 days, so it never lines up with a calendar month. That is why September 2026 can hold two new moons or none at all, and why the same phase name covers several days in a row: the eight names — new, waxing crescent, first quarter, waxing gibbous, full, waning gibbous, last quarter, waning crescent — are 45-degree slices of the Sun–Moon angle, not instants. The two moments that are instants, the new moon and the full moon, are listed at the top of the page to the minute.

The Moon in column is the zodiac sign the Moon is crossing, which it changes roughly every two and a half days — a different thing from your own Moon sign, which is fixed at birth. The void column marks the stretch between the Moon's last exact aspect and its next sign change. In traditional practice that is a window for finishing and resting rather than launching; it describes timing, not outcomes, and nothing on this page predicts events.

Where the numbers come from

Positions are computed with astronomy-engine, the same engine behind our birth chart calculator, checked against Swiss Ephemeris to within a fraction of an arc minute. The new and full moon moments were verified against AstroPixels (Fred Espenak, NASA/GSFC) and agree to better than two minutes. If you want a month to the second, cross-check a dedicated astronomy source such as timeanddate.com.

Take it further

This calendar is the sky. The tools below put it against your own chart — all free, no sign-up.

Lunar guide collection

Moon Rituals & Lunar Living

The lunar cycle explained, plus simple rituals for the new moon, the full moon and eclipse season.

$19 8 guides · 91 pages · PDF

See what's inside — $19

Frequently asked questions

When is the full moon in September 2026?

26 Sep 2026 at 16:49 UTC, with the Moon in Aries. The table above converts that moment to your own time zone, which can move it to the day before or after.

When is the new moon in September 2026?

11 Sep 2026 at 03:27 UTC, with the Moon in Virgo. Times on this page are shown in your browser's time zone once the page loads.

Which time zone are these times in?

They are calculated in UTC and then converted by your browser to whichever time zone your device is set to — the page names it under the heading. A lunation is a single moment for the whole planet, so only the clock reading changes, never the event.

What does "void of course" mean in this table?

The Moon is void of course between its last exact aspect to a planet and the moment it enters the next sign. Traditional practice treats it as a poor window for starting something you want to stick, and a fine one for rest, tidying and finishing off. It is a timing convention, not a forecast of events.

How accurate are these dates?

They come from the same ephemeris engine as our birth chart calculator (astronomy-engine), not from a copied table. New and full moon moments were checked against AstroPixels (Fred Espenak, NASA/GSFC) and agree to well under two minutes.

Esotorium reports and tools are for self-reflection and entertainment. They are not medical, psychological, financial or legal advice, and they do not predict events.