-- Here is a look at what you need to know about the solstice . The event happens twice each year when the Earth is at either its northernmost or southernmost point . Summer solstice will occur on June 21 , 2013 at midnight UT in the Northern Hemisphere . Winter solstice will take place on December 21 , 2013 at 5:11pm UT in the Northern Hemisphere .
The event happens twice each year when the Earth is at either its northernmost or southernmost point . Summer solstice will occur on June 21 , 2013 at midnight UT in the Northern Hemisphere . Winter solstice will take place on December 21 , 2013 at 5:11pm UT in the Northern Hemisphere .