Moon calendar for September 2026

September 2026 holds fourteen crossings from one sign to the next, one more than August despite being the shorter month. The reason is that the Moon keeps its own period, a little under two and a half days per sign, and takes no notice of where a calendar puts its edges - so an extra crossing lands inside the month now and then. Full moon on the 26th in Aries, new moon on the 11th in Virgo.

Day by day

DateMoon signPhaseLight
1 TueTaurus → Tauruswaning gibbous80%
2 WedTauruswaning gibbous70%
3 ThuGemini → Geminilast quarter59%
4 FriGeminilast quarter48%
5 SatGemini → Cancerlast quarter37%
6 SunCancerwaning crescent26%
7 MonCancer → Leowaning crescent16%
8 TueLeowaning crescent9%
9 WedLeo → Virgowaning crescent3%
10 ThuVirgowaning crescent1%
11 FriVirgo → Libranew moon0%
12 SatLibrawaxing crescent2%
13 SunLibrawaxing crescent6%
14 MonScorpio → Scorpiowaxing crescent12%
15 TueScorpiowaxing crescent20%
16 WedScorpio → Sagittariuswaxing crescent28%
17 ThuSagittariusfirst quarter37%
18 FriSagittariusfirst quarter47%
19 SatCapricorn → Capricornfirst quarter56%
20 SunCapricornfirst quarter65%
21 MonCapricorn → Aquariuswaxing gibbous74%
22 TueAquariuswaxing gibbous82%
23 WedAquariuswaxing gibbous89%
24 ThuPisces → Pisceswaxing gibbous95%
25 FriPisceswaxing gibbous98%
26 SatAries → Ariesfull moon100%
27 SunArieswaning gibbous99%
28 MonAries → Tauruswaning gibbous96%
29 TueTauruswaning gibbous90%
30 WedTaurus → Geminiwaning gibbous83%

Key days of the month

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Full moon — September 26 at 16:49 UTC · Aries
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New moon — September 11 at 03:27 UTC · Virgo

The equinox, and a trick with moonrise

On the 22nd or 23rd the Sun crosses the celestial equator and the nights take the lead. Daylight now drains at four minutes a day, a rate matched only in March. September also hands over the year's one genuinely odd sight: the full moon nearest the equinox rises at almost the same time on several evenings running, twenty minutes apart instead of the usual fifty. Nothing mystical about it - the ecliptic simply lies at a shallow angle to the horizon at this time of year.

The Harvest Moon

Only one full moon in the year is named for an event rather than a month, and this is it. The Harvest Moon is whichever full moon falls closest to the September equinox, which is why it occasionally slides into early October and carries the name off with it. Farmers valued it for the reason above: several evenings of light arriving straight after sunset, enough to keep bringing the crop in. When the name travels, September keeps the Corn Moon.

September questions

Why does it look orange, people write. Because a rising moon is seen through a long slab of atmosphere that scatters the blue away - the same physics as a red sunset, and nothing to do with the harvest. Then the practical ones: garlic going in, houseplants being repotted, and whether the calendar can name a good day for it. It can name the phase and the sign. The rest is tradition, and we would rather say so than sell you a list.

The Moon’s position is astronomy; the beliefs and interpretations are tradition, not scientific fact.

A personal day, not just the shared backdrop

Everything on this page is shared. The Moon occupies one sign for the whole planet at a time, which is exactly what makes a calendar possible - and exactly where a calendar stops. A birth date narrows the same day down to one person, and that is what Luna reads aloud in the app: the arcana of the day, the mood, and a single concrete step.

Open Luna

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