December 13, 2020: The Great Conjunction countdown: 8 days! Jupiter’s gap to Saturn is 0.8° as the planets appear in the southwest after sunset. Farther east, Mars continues its eastward march in Pisces.
by Jeffrey L. Hunt
Chicago, Illinois: Sunrise, 7:10 a.m. CST; Sunset, 4:20 p.m. CST. Check local sources for sunrise and sunset times for your location.
Jupiter continues to close in on Saturn eight evenings before the Great Conjunction of 2020. This evening bright Jupiter is 0.8° to the lower right of Saturn.
Great Conjunction Countdown: 8 days.
Begin looking for them as night falls in the southwestern sky. Jupiter is the brightest star in the region. Saturn is dimmer and to Jupiter’s upper left. Find them before they get too low in the sky. From about 45 minutes after sunset to 90 minutes after sunset, they are in their best location to see. Jupiter sets about 2.5 hours after sunset. Saturn follows a few minutes later.
Mars is farther east. It is over halfway up in the sky in the southeast. It is the brightest star in the region as it marches eastward in front of the starry background of Pisces.
Use a binocular to spot it near Zeta Piscium (ζ Psc on the chart) and Epsilon Piscium (ε Psc). Notice Hamal on the chart and find it in the sky. Mars is heading generally in that direction and passes below the star later next month.
Read about Mars during December.
Detailed note: One hour after sunset Saturn is over 16° in altitude in the southwest, 0.8° to the upper left of Jupiter. Great Conjunction Countdown: 8 days. Farther east Mars is over 45° up in the southeast, 0.7° to the upper left of ζ Psc and 2.7° to the lower left of ε Psc.
Read more about the planets during December.
April 20, 2021: Venus is very low in the west-northwest after sunset. The gibbous moon is in Cancer, between Regulus and Pollux. Mars, above the horns of Taurus, approaches the star cluster Messier 35.
April 20, 2021: Bright Jupiter and Saturn are in the southeastern sky before sunrise, gently moving eastward compared to the starry backdrop of Capricornus.
April 19, 2021: The first evening appearance of Venus for this apparition occurs this evening. Look for it low in the west-northwest about 20 minutes after sunset.
April 19, 2021: Venus begins to appear in the west after sunset. The moon lines up with Pollux and Castor, while Mars is above Bull’s horns in the western evening sky.
April 19, 2021: The bright morning planets, Jupiter and Saturn, are in the southeastern sky before sunrise. Capricornus is the starry background for this giant planet duo.