Stargazers and moon enthusiasts, it’s time to look up and marvel at the last full moon of the year: December’s Cold Moon. This celestial event will reach its peak brightness at 4:02 a.m. EST on Sunday, December 15. However, the moon will appear full for several days, offering ample opportunity to catch a glimpse of its brilliance.
Why Is It Called the Cold Moon?
The name “Cold Moon” originates from the Old Farmer’s Almanac, which attributes this title to the typically frigid temperatures that characterize December. The Cold Moon is not the only name associated with this lunar event.
The Mohican people referred to it as the Long Night Moon, reflecting the occurrence of December’s full moon during one of the longest nights of the year. Other names cited by the Old Farmer’s Almanac include:
- Drift Clearing Moon
- Frost Exploding Trees Moon
- Moon of the Popping Trees
- Hoar Frost Moon
- Snow Moon
- Winter Maker Moon
These varied names, steeped in tradition and heritage, highlight the cultural significance of this lunar phase.
How Long Will the Cold Moon Last?
The Cold Moon will achieve its maximum brightness early on December 15. Yet, its luminous appearance spans several days, making it a treat for skywatchers. According to NASA:
- On Friday, December 13, about 95% of the moon’s near side will be lit by the sun.
- On December 14, the moon’s illumination will rise to 99%.
- By December 15, the moon will reach full illumination at 100%.
Even on December 16, 98% of the moon will remain illuminated.
This extended duration ensures that viewers have plenty of chances to enjoy the Cold Moon, even if local weather conditions vary.
A Celestial Companion: Jupiter
As you gaze at the Cold Moon, keep an eye out for Jupiter. On December 14, the gas giant will be positioned between the almost full moon and Aldebaran, the brightest star in the Taurus constellation. This pairing adds an extra dimension to the night sky’s beauty.
Viewing Tips
Fortunately, enjoying the Cold Moon doesn’t require specialized equipment like binoculars or a telescope. Simply find a clear night and a location with minimal light pollution for the best viewing experience. Local weather forecasts will guide whether your area is likely to have clear skies.
Looking Ahead to the Wolf Moon
As 2024 comes to a close, the first full moon of the new year, the Wolf Moon, is set to grace the sky on Monday, January 13, 2025. Until then, the Cold Moon offers a fitting end to the year’s lunar cycle.
Take a moment this December to step outside, look up, and appreciate the beauty of the Cold Moon. Whether you’re captivated by its cultural history or simply its stunning presence, this lunar event is a reminder of the wonders of the night sky.