Parhelion is a meteorological occurrence. When the sun shines through ice crystals, spots or bars, often prismatic, “dog” each side of the sun. They are sometimes called a “winter rainbow.” Enough ice in the sky may cause a complete circle or arc to appear around the sun as well, or, rarely, great enough reflection to appear as if three separate suns hang in the sky.
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About Parhelion in literature and Roarke’s quote
Shakespeare used a famously recorded environmental event of a brilliant and unusual parhelion occurring during the Battle of Mortimer’s Cross as the opening lines in the play Richard III.
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“Now is the winter of our discontent Made glorious summer by this sun of York.” ~Richard III, Gloucester, later to become King Richard III