Winter Solstice: The Science of the Shortest Day of 2018

By Laura Geggel The winter solstice is in full stride today (Dec. 21), which boasts the fewest hours of daylight for 2018 in the Northern Hemisphere. Although the solstice gets an entire day of recognition, it happens in an instant: at 15:23 p.m. EST (10:23 p.m. GMT), when the North Pole is at its farthest tilt of …