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 …

4 days ago · The winter solstice is quickly approaching. Here's what you need to know about the official start of winter in 2025.

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 …

Nov 25, 2025 · The winter solstice marks the official beginning of astronomical winter (as opposed to meteorological winter, which starts about 3 weeks before the solstice). It occurs once a year …

6 days ago · The winter solstice marks the shortest day and longest night of the year, but when is it in 2025 and what more does it signify? Ben Rich and Helen Willetts can help explain.

3 days ago · Find out the exact date and time of the 2025 winter solstice, what causes the shortest day of the year, and why it marks the official start of winter across the Northern …

3 days ago · The winter solstice is the darkest day of the year and the beginning of astronomical winter. Find out what really happens to the Sun, how our ancestors understood it, and why this …