Our celestial calendar includes the mini moon, full moons, supermoons, meteor showers and every astronomical phenomenon ...

Meteorological autumn began on Sept. 1, but astronomical autumn, also known as calendar autumn or the autumnal equinox, is on ...

a 260-day sacred calendar. The Long Count, an astronomical calendar, that was used to track longer periods and was crucial for historical records and celestial events in Mayan civilization. In 738 BC, ...

Spring equinox (around March 20-21): This marks the start of spring in the astronomical calendar. On this day, the Earth’s tilt is such that the day and night are nearly equal. Summer solstice ...

During an equinox, places around the globe experience nearly equal amounts of daytime and nighttime. The second occurrence ...

Venus still hovers low in the southwestern sky at dusk a half-hour to 45 minutes after sunset. Saturn is comfortably high up ...

Pacific Standard Time on Sunday, Sept. 22, it's both astronomically and meteorologically fall in the Northern Hemisphere.

Pumpkin Spice lovers, it's time to celebrate! This year, Earth hits the Autumnal Equinox on Sunday and the fall season will ...

The autumn equinox, which comes around every September for the Northern Hemisphere, marks the official astronomical start of ...

Courtesy of Dany Sternfeld On Tuesday September 17th evening, we'll see a partial lunar eclipse beneath a supermoon. It's ...

Supermoon and lunar eclipse. The night between Tuesday, September 17 and Wednesday, September 18 will offer a spectacle in ...

Though the autumnal equinox is Sunday, marking the astronomical start of fall, Chicago-area residents wouldn't know without ...