"NORTHERN SUMMER BEGINS TOMORROW: Tomorrow is the June solstice, the longest day of the year in the northern hemisphere, and the shortest day in the south. The exact moment of the solstice is 11:54 am EDT on June 21st, when the sun reaches its highest declination on the celestial sphere (+23.5o). That moment marks the beginning of northern summer and southern winter. Wherever you live, Happy Solstice!
http://spaceweather.com/
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