The last supermoon of 2025 is arriving this week, and it’s going to be a beautiful sight in the night sky. On 3 December 2025, the almost-full Moon, also known as the Cold Moon, will shine brightly. On the same night, the Moon will move in front of the Pleiades star cluster, creating a rare and stunning event called a lunar occultation.
This celestial show will be visible from many parts of the world. It also leads into the full Cold Supermoon, which reaches its brightest point on 4 December. This is a great opportunity for anyone, whether you’re a beginner or an experienced skywatcher, to see the Moon and stars appear to “meet” in the sky.
What is the Cold Moon?
The full Moon in December is traditionally called the Cold Moon. The name comes from the start of winter, when temperatures drop and nights grow longer. Many cultures have passed down these names over generations. The Cold Moon rises during one of the darkest times of the year and is considered a special winter landmark in the sky.
This year’s Cold Moon is also a supermoon, which means it is closer to Earth than usual. Because of this, it looks a bit bigger and brighter in the sky. What makes it even more special is its pairing with a lunar occultation of the Pleiades, a bright group of young blue stars often seen as a faint misty patch on winter nights.
Best Time to Watch the December 2025 Cold Moon
The best time to see the Cold Moon is shortly after moonrise on 4 December. This is when the Moon looks largest because of the “moon illusion.” Pick a place with a clear view of the eastern horizon to enjoy the most dramatic sight. The Moon will stay visible all night and can also be viewed early on the morning of 5 December.
The Cold Supermoon will reach its brightest point on 4 December 2025 at 6:14 p.m. ET. However, the Pleiades occultation happens a day earlier, on 3 December. The Moon will stay visible all night and can also be seen before sunrise on 5 December.
Key Timing Details
- Lunar occultation of the Pleiades: 3 December 2025
- Full Cold Supermoon peak: 4 December 2025 at 6:14 p.m. ET
- Best viewing time: Just after moonrise on 4 December
Viewing Timings
Here are moonrise timings for two major cities:
- New York: Sunset at 4:29 p.m. EST, moonrise at 4:56 p.m. EST
- Los Angeles: Sunset at 4:43 p.m. PST, moonrise at 5:27 p.m. PST
Astronomers suggest choosing an open or higher place facing east for the best view. You can also use a moonrise time tool online to find the exact timing for your own location.
Will it be visible in India?
In India, the Cold Moon will be best seen after sunset, when it rises. Make sure you have a clear view of the sky and try to avoid areas with heavy light pollution for the best experience.
