Two times each year, in May and July, the sun passes directly overhead in Hawaii.
On those special days, around noon Hawaii time, the sun will be exactly overhead, at a 90-degree angle, and an upright object, such as a flagpole, will have no shadow.
This only happens in the tropics; the sun is never directly overhead on any other part of the planet. Since Hawaii is the only U.S. state in…
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