The longest night of the entire year will feature an astronomical double-header giving stargazers plenty to look for from sundown until daybreak. The December solstice occurs on Monday at 5:02 a.m. EST, the day when the sun's rays are most direct over the Southern Hemisphere. Winter Solstice in the Northern Hemisphere, takes place between December 19 and 23. This year it is on Monday, December 21, where we will experience ...