FILE - This June 21, 2001 file photo, dancers from Zuni Pueblo, N.M., perform the White Buffalo Dance during the Summer Solstice 2001 celebration in the plaza of Pueblo Bonito at Chaco Culture National Historical Park, N.M. A black Moroccan slave who
FILE - In this Sunday, June 21, 2015 file photo, the sun rises as thousands of revellers gather at the ancient stone circle Stonehenge to celebrate the Summer Solstice, the longest day of the year, near Salisbury, England. British authorities have ap
A druid waits for the sun to set during the summer solstice festival at Stonehenge, Salisbury, U.K., June 20, 2017.
Video shows a phenomenon known as "midnight sun" in Alaska; as the summer solstice approaches, the amount of daylight in the northern part of Alaska approaches a full 24 hours.
The stamp, that when touched transforms the image of the blacked-out sun into the moon, comes out in June 2017, on the Summer Solstice.
PHOTO: The Summer Solstice moon is shown through the haze of the so-called Fish Fire above Azusa, Calif. June 20, 2016.
People practice yoga in Times Square as part of a Summer Solstice and International Day of Yoga celebration in New York City, June 21, 2015.
PHOTO: Revelllers celebrate the pagan festival of 'Summer Solstice' at Stonehenge in Wiltshire in southern England, June 21, 2013.