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A year for Neptune is equal to 164.79 Earth years and a "day" is 16.1 Earth hours long. So a Neptune year is equal to 60,910 Earth days or 89,666 Neptune days. Interesting fact : there has not been one full Neptunian year since its discovery in September, 1846. In late June of 2011, we will mark one "year" since its discovery.

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13y ago

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