Astronomy Calendar
Check out what's happening in the sky!
This calendar of celestial events is frequently updated.
Image: UAF photo by Todd Paris, 2014.
Discover the Sun during the Heliophysics Big Year, October 2023 to December 2024!
The Heliophysics Big Year is a global celebration of solar science and the Sun’s influence
on Earth and the entire solar system. Learn more: .
- December 7 - Jupiter at Opposition. The giant planet will be at its closest approach to Earth and its face will be fully illuminated by the Sun. It will be brighter than any other time of the year and will be visible all night long. This is the best time to view and photograph Jupiter and its moons. A medium-sized telescope should be able to show you some of the details in Jupiter's cloud bands. A good pair of binoculars should allow you to see Jupiter's four largest moons, appearing as bright dots on either side of the planet.
- December 13, 14 - Geminids Meteor Shower. The Geminids is the king of the meteor showers. It is considered by many to be the best shower, producing up to 120 multicolored meteors per hour at its peak. It is produced by debris left behind by an asteroid known as 3200 Phaethon. The shower runs annually from December 7-17. It peaks this year on the night of the 13th and morning of the 14th. The nearly full moon will block out all but the brightest meteors this year. But if you are patient, you may still be able to catch a few good ones. Best viewing will be from a dark location after midnight. Meteors will radiate from the constellation Gemini, but can appear anywhere in the sky.
- December 15 - Full Moon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be fully illuminated. This phase occurs at 12:03 am ÀÖ»¢Ö±²¥ time. This full moon is sometimes known as the Cold Moon, the Long Nights Moon, and the Moon Before Yule.
- December 21 - December Solstice. The December solstice occurs at 12:17 am ÀÖ»¢Ö±²¥ time. The South Pole of the earth will be tilted toward the Sun, which will have reached its southernmost position in the sky and will be directly over the Tropic of Capricorn at 23.44 degrees south latitude. This is the first day of winter (winter solstice) in the Northern Hemisphere and the first day of summer (summer solstice) in the Southern Hemisphere.
- December 21, 22 - Ursids Meteor Shower. The Ursids is a minor meteor shower producing about 5-10 meteors per hour. It is produced by dust grains left behind by comet Tuttle. The shower runs annually from December 17-25. It peaks this year on the night of the 21st and morning of the 22nd. The waning gibbous moon will block out many of the fainter meteors this year. If you are patient, you should still be able to catch some of the brighter ones. Best viewing will be just after midnight from a dark location far away from city lights. Meteors will radiate from the constellation Ursa Minor, but can appear anywhere in the sky.
- December 25 - Mercury at Greatest Western Elongation. The planet Mercury reaches greatest western elongation of 22 degrees from the Sun. This is the best time to view Mercury since it will be at its highest point above the horizon in the morning sky. Look for the planet low in the eastern sky just before sunrise.
- December 30 - New Moon. The Moon will located on the same side of the Earth as the Sun and will not be visible in the night sky. This phase occurs at 1:28 pm ÀÖ»¢Ö±²¥ time. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.
- January 3, 4 - Quadrantids Meteor Shower. The Quadrantids is an above average shower, with up to 40 meteors per hour at its peak. It is thought to be produced by dust grains left behind by an extinct comet known as 2003 EH1. The shower runs annually from January 1-5. It peaks this year on the night of the 3rd and morning of the 4th. The crescent moon will set early in the evening, leaving dark skies for what should be an excellent show. Best viewing will be from a dark location after midnight. Meteors will radiate from the constellation Bootes, but can appear anywhere in the sky.
- January 10 - Venus at Greatest Eastern Elongation. The planet Venus reaches greatest eastern elongation of 47.2 degrees from the Sun. This is the best time to view Venus since it will be at its highest point above the horizon in the evening sky. Look for the bright planet in the western sky after sunset.
- January 13 - Full Moon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be fully illuminated. This phase occurs at 1:28 pm ÀÖ»¢Ö±²¥ time. This full moon is sometimes known as the Wolf Moon, the Old Moon and the Moon After Yule.
- January 16 - Mars at Opposition. The red planet will be at its closest approach to Earth and its face will be fully illuminated by the Sun. It will be brighter than any other time of the year and will be visible all night long. This is the best time to view and photograph Mars. A medium-sized telescope will allow you to see some of the dark details on the planet's orange surface.
- January 29 - New Moon. The Moon will located on the same side of the Earth as the Sun and will not be visible in the night sky. This phase occurs at 3:37 am ÀÖ»¢Ö±²¥ time. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.
- February 12 - Full Moon. The Moon will be located on the opposite side of the Earth as the Sun and its face will be fully illuminated. This phase occurs at 13:55 UTC. This full moon is sometimes known as the Snow Moon and the Hunger Moon.
- February 27 - New Moon. The Moon will located on the same side of the Earth as the Sun and will not be visible in the night sky. This phase occurs at 3:46 pm ÀÖ»¢Ö±²¥ time. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.
More astronomy viewing resources:
Check the for Interior ÀÖ»¢Ö±²¥, courtesy of the Geophysical Institute.
Use star wheels and astrolabes to find celestial bodies!
Sea and Sky has a to help you plan future astronomy viewings.
Check the , courtesy of the Curiosity rover.
Image: Perseids Meteor Shower (NASA/JPL).
This project was funded under NASA cooperative agreement NNX16AL65A and cooperative agreement number NNH15ZDA004C. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Aeronautics and Space Administration.