The winter solstice, or hibernal solstice, occurs when either of Earth 's poles reaches its maximum tilt away from the Sun. This happens twice yearly, once in each hemisphere (Northern and Southern).

2 days ago · When is the winter solstice? In 2025, the first day of winter is Saturday, December 21. So, what is the winter solstice and why does it happen? Learn all about the shortest day of the year—and …

Astronomical winter begins at the winter solstice, which is the shortest day of the year. This means days get longer during winter—very slowly at first, but at ever-larger daily intervals as the March equinox …

6 days ago · The winter solstice has long marked a time of rebirth, behind it are fascinating astronomical events.

8 hours ago · This year's winter solstice will bring the fewest hours of daylight. What to know about this seasonal change.

13 hours ago · During the winter solstice, the sun will be at its lowest noontime point in the sky for 2025. That's because it's when the northern half of the Earth is tilted its farthest away from the sun due ...

6 days ago · Astronomical winter begins Sunday, Dec. 21 in the Northern Hemisphere. Here's how the solstice works.

Dec 8, 2025 · The winter solstice marks the shortest day of the year, bringing the least amount of daylight and the longest night. This year, the winter solstice will occur on Sunday, Dec. 21, at 10:03 …

2 days ago · The winter solstice plinth at the Open Deck Observatory. The hole in the center aligns with the Sun as it rises on the day of the December solstice! What is the December Solstice? Though the …

Dec 8, 2025 · December 21 (or December 22) is the shortest day of the year in the Northern Hemisphere. On this day, known as the winter solstice, the Sun in the sky is the farthest south and …