Photograph by Sergey Ponomarev, AP Photo

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A Russian neo-pagan supreme priest, right, beats a tambourine while his followers dance around a bonfire to celebrate the summer solstice.

Photograph by Sergey Ponomarev, AP Photo

Summer Solstice 2013: Why It's the First Day of Summer

This year's summer solstice will be followed by the year's largest supermoon.