Sep32028 · UTC
Full Moon — Corn Moon
The Moon reaches its full phase (Corn Moon).
The astronomy calendar
September 2028.
Choose a date to see what’s happening. Event pages show your local viewing times and directions.
The month at a glance
Choose a date.
Highlighted days have catalog events. Choose a day to jump to its details below. This calendar uses UTC dates.
| S | M | T | W | T | F | S |
|---|---|---|---|---|---|---|
| 27 | 28 | 29 | 30 | 31 | 1 | 2 |
| 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 24 | 25 | 26 | 27 | 28 | 29 | 30 |
6 events this month
Grouped by peak date in UTCSunday, September 3 UTC
Wednesday, September 6 UTC
Sep62028 · UTC
Mercury at Greatest Eastern Elongation
Mercury reaches its widest apparent separation from the Sun and is best placed in the evening sky.
Friday, September 8 UTC
Sep82028 · UTC
Venus–Mars Conjunction
Venus and Mars pass about 2.3° apart.
Monday, September 18 UTC
Sep182028 · UTC
New Moon
Dark moonless skies make this a useful night for stargazing.
Friday, September 22 UTC
Sep222028 · UTC
September Equinox
Astronomical autumn begins in the Northern Hemisphere and spring in the Southern Hemisphere.
Saturday, September 30 UTC
Sep302028 · UTC
Neptune at Opposition
Neptune lies opposite the Sun, rises near sunset, and is favorably placed for observing.
Catalog refreshed . Dates and predictions come from the catalog used by Forecast Bar, with a source on every event.
Calendar day groupings use UTC. Event times adapt to your device’s time zone when JavaScript is available. Exact local visibility and weather can differ from the global catalog timing.
Take the sky with you
From a date on a calendar
to a night worth remembering.
Open the astronomy calendar in Forecast Bar to explore events alongside your local weather and astronomy alert settings.
