Night sky in September 2027
What to see in the night sky in September 2027: Moon phases, the darkest nights for the Milky Way, planets, meteor showers and other events, with dates and times.
September equinox 2027
Day and night are about equal; nights in the north are getting long and dark again.
Mercury at greatest eastern elongation, 25 September 2027
Mercury is 26.3° from the Sun — the best time to find it low in the west after sunset.
Neptune at opposition 2027
Neptune is opposite the Sun: up all night, at its closest and brightest (magnitude 7.8) in Pisces.
Moon phases
- Full Moon · Harvest Moon · 23:03 UTC
- New Moon · 02:35 UTC
Darkest nights
Around the new moon the sky is darkest — the best nights for the Milky Way, faint galaxies and astrophotography: 26 Sept – 4 Oct.