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Neptune takes about 165 Earth years to orbit the Sun. That's one Neptune "year" of course.

Neptune's "day" is about 16 hours and 6 minutes ( 16.1 hours). That's the time it takes to spin on its axis once.

From that you can work out how many Neptune days the orbit takes, if you want. I make it to be about 89838 "Neptune days".

You can say Neptune "year" and Neptune "day", but the terms "week" and

"month" are normally only used for planet Earth. Also when I've used "hour"

in this answer I mean an Earth hour. This is normal in books on astronomy.

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12y ago

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