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• And here's a rather subtle green flash video here. I had to watch it several times to convince myself I saw any green.
• Bottom line: The green flash is legendary, and some people have told us they thought it was a myth, like a unicorn or a pot of gold at the end of a rainbow. But green flashes are very real. You need a distant and very clear horizon to see them at the last moment before the sun disappears below the horizon at sunset.

EarthSky Facebook friend Jim Grant caught this green flash on April 27, 2012 off the coast of San Diego.