For those living in the Northern Hemisphere, Dec. 21 marks the beginning of the longest night of the year - and, of course, the shortest day. "As the Earth moves around the sun, each hemisphere experiences winter when it's tilted away from the sun and summer when it's tilted toward the sun", according to CNN.
That's because the final full moon of the year-known as the Cold Moon, or Full Cold Moon-comes on Saturday, technically at 12:49pm.
The last time a full moon occurred on the Winter Solstice was in 2010, and the next one won't occur again until 2094. The day and time of the solstice vary each year.
The Weather Network is predicting a longer, colder, winter this year and today will definitely turn more winter-like this afternoon with snow and blowing snow, driven by northerly winds gusting to 50 km/h.
In the southern hemisphere it's exactly the opposite story - the South Pole is pointing towards the Sun, making it summertime "down-under".
Celebrations have not yet concluded, as Stonehenge will holds its annual winter solstice celebrations early tomorrow morning.
The sun appears to set framed between the arches of the monument signifying the midwinter sunset, according to English Heritage.
Wait. Why is the Earth tilted?
In Ireland, people gather at Newgrange, a massive 5,000 years old gravesite, to witness the sunrise lighting up the ancient tomb. In Iran, the occasion is celebrated as Yalda night or Shab-e-Yalda.
It may feel more like springtime in Kamloops, but today marks the first of winter. While locals enjoy rice balls meaning "family reunion". This treat is said to bring prosperity and unity.