What to watch for in the night sky this September

This month in the eastern predawn sky, Mercury will be positioned below Venus and Jupiter.

On September 17 and 18, the Moon will sit between Venus and Jupiter.

Saturn will make its closest approach to Earth this year on September 21.

The autumnal equinox is on September 22 at 2:19 p.m. EDT.

Moon Phases:

• Full Moon: September 7

• Last Quarter: September 14

• New Moon: September 21

• First Quarter: September 29