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Double sunset
Sun setting twice as a result of local geographical features / From Wikipedia, the free encyclopedia
A double sunset is a rare astro-geographical phenomenon, in which the Sun appears to set twice in the same evening from a specific viewing-point. A double sunrise may also occur in a similar situation. Such phenomena may have been regarded as significant in prehistoric times, and double sunsets have been discussed in the context of archaeoastronomy by researchers such as Alexander Thom.[1]
Midsummer double sunset at Chrome Hill in Derbyshire, England. The Sun sets behind the hill (left) before re-emerging (right) to set again in the valley.