The sky
in September 2026.
Everything the sky does in September 2026, day by day, to the minute, Paris time: new and full moons, planets entering signs, exact aspects between planets, retrogrades, eclipses and void of course Moon. Calculated from ephemerides. Next to moons, eclipses and retrogrades, the ☉ tag tells which birthdays it speaks to; every line leads to its own page.
Day by day
The ☉ tag gives the birthdays whose birth Sun is at that degree, to within one degree (births from 1920 to 2030).
Tuesday 1 September
- ♃︎△♄︎Jupiter-Saturn trine
- ♂︎□♄︎Mars-Saturn square
- ☿︎⚹♂︎Mercury-Mars sextile
Friday 4 September
Thursday 10 September
- ♀︎♏︎Venus enters Scorpio
- ☿︎♎︎Mercury enters Libra
- ♅︎℞Uranus turns retrograde at 5°42′ Gemini☉︎ 25–29 May
Friday 11 September
- ●New Moon in Virgo, 18°26′☉︎ 9–13 September
Saturday 12 September
Monday 14 September
- ☿︎△♅︎Mercury-Uranus trine
- ☉︎⚹♂︎Sun-Mars sextile
Tuesday 15 September
- ♀︎□♇︎Venus-Pluto square
Wednesday 16 September
Friday 18 September
Tuesday 22 September
Wednesday 23 September
Saturday 26 September
- ☉︎☍♆︎Sun-Neptune opposition
- ☉︎△♇︎Sun-Pluto trine
- ○Full Moon in Aries, 3°37′☉︎ 22–26 March
Monday 28 September
- ♂︎♌︎Mars enters Leo
- ☉︎△♅︎Sun-Uranus trine
Wednesday 30 September
Retrogrades and void of course Moon
The Moon is void of course 14 times this month in the classical convention (146h 39m in all), 14 times in the modern one (146h 39m). All the times →
Questions
What are the key dates in September 2026?
New Moon on the 11th at 05:27 (Virgo) and full Moon on the 26th at 18:50 (Aries). Sign changes: Venus into Scorpio on the 10th, Mercury into Libra on the 10th, the Sun into Libra on the 23rd, Mars into Leo on the 28th and Mercury into Scorpio on the 30th.
Which planets are retrograde in September 2026?
Saturn all month, Uranus from the 10th, Neptune all month and Pluto all month.
How many exact aspects between planets in September 2026?
14 exact aspects, Moon excluded. The first: Jupiter-Saturn trine on the 1st at 00:05; the last: Sun-Uranus trine on the 28th at 18:22.
This month, on YOUR chart
These dates are the same for everyone. Your birthday tells where your Sun is; your birth, to the minute, tells where the other nine are. Every day AstroXP crosses the real sky with all ten, and tells you which ones concern you.
On a computer? Scan this code with your phone.
Calendars
Calculated with astronomy-engine (the app’s engine), geocentric positions, tropical zodiac. Paris time. Exact aspects between planets, Moon excluded; each day’s Moon is drawn at noon.