The winter solstice is on Saturday, Dec. 21, in the Northern Hemisphere, marking the astronomical seasonal change from fall to winter. It’s also the shortest day of the year with the fewest hours of daylight, according to the Smithsonian Science Education Center.

Although New York has already seen its first few snowfalls and chilly temperatures of the season, it's not technically winter until the winter solstice on Dec. 21, or the shortest day of the year, which will have less than ten hours of daylight.

On the winter solstice, the Earth tilts away from the sun and we experience the shortest day of the year. Here's when that happens in Arizona.

It may have felt like winter in Tennessee recently, but there still is a bit of time before the first day of winter. Here's when is the winter solstice and what to expect on the shortest day of the year.

People take part in the winter solstice celebrations at the Stonehenge prehistoric monument on Salisbury Plain in Wiltshire.

The winter solstice is the shortest day of the year, marking the period with the fewest hours of daylight. It also represents the longest night of the year, and the time when the sun is at its lowest daily maximum elevation in the sky.