MinutePhysics Explains How the Earth’s Tilt and Rotation Make December 22 the Longest Day of the Year

MinutePhysics explains how the Earth’s tilt and rotation make December 22 the longest day of the year. Despite the winter months having fewer hours of daylight, they are actually the longest days of the year because the elliptical orbit of the Earth around the Sun means a full rotation takes  varying lengths of time throughout the year.