The solstice this year, which is Friday 21st Dec, will be extra special because it will be followed the next day by a full moon known as the Cold Moon, and you may see the Ursid meteor shower to boot.
Today marks the shortest day of the year in the Northern Hemisphere, as the sun appears at its most southerly position, directly overhead at the Tropic of Capricorn. The exact time of the 2018 winter solstice will be 22:23 GMT. We experience seasons here on Earth because the Earth is tilted on its rotational axis. As the Earth moves around the sun, winter occurs when the hemisphere is tilted away from the sun and summer when it’s tilted toward the sun.