Calendar

First Quarter Moon

The Moon is at First quarter on this date -it will be visible high in the southern sky in early evening.

Venus at Perihelion

The planet Venus is a Perihelion (its closest approach to the Sun) on this date.

Labor Day (USA)

Labor Day is a federal holiday in the United States celebrated on the first Monday in September in any given year (i.e. a single day from September 1 through September 7) to honor and recognize […]

Full Moon

The Full Moon rises at sunset, and is visible all night. The Vatican Observatory's monthly Full Moon Meetup for Sacred Space Astronomy subscribers is held at 10:00 AM Tucson time.

Last Quarter Moon

The Moon is at Last Quarter (or Third Quarter) – rising around midnight, and visible to the south after sunrise.

Autumnal Equinox

Fall begins with the autumnal equinox - in the Northern Hemisphere, it's the September equinox; in the Southern Hemisphere, it is the equinox in March.