The winter solstice signals the shortest day of the year. But what exactly happens on that day, and why do we celebrate it?

The winter solstice marks the shortest day of the year with the longest night of the year. The December solstice also marks the official start of astronomical winter in the Northern Hemisphere, taking ...

LONDON (AP) — As the sun rose Saturday on the longest day of the year in the Northern Hemisphere, a crowd erupted in cheers at Stonehenge where the ancient monument in southern England has clocked the ...

LONDON (AP) -- As the sun rose Saturday on the longest day of the year in the Northern Hemisphere, a crowd erupted in cheers at Stonehenge where the ancient monument in southern England has clocked ...