December offers excellent night-sky viewing across the Four Corners, with Saturn shining high in the early evenings and Neptune nearby for those with binoculars. Jupiter rises later and dominates overnight, bright enough to reveal its cloud bands and four largest moons through a telescope. Before sunrise, Mercury makes its best Northern Hemisphere appearance of the year. The Geminid meteor shower also peaks mid-month, delivering dozens of meteors per hour under dark skies. With crisp air and long nights, it’s an ideal month for stargazing.