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 solstice happens twice each year when the sun is at either its northernmost or southernmost position . Summer solstice will occur on June 21 , 2013 at 5:04am UT in the Northern Hemisphere . Winter solstice will take place on December 21 , 2013 at 5:11pm UT in the Northern Hemisphere .