16 hours or 0.67125 earth days
The rotation of the planet Neptune is much faster than Earth's. It completes a rotational "day" in about 16 Earth hours. So in an Earth year (365.25 Earth days), Neptune completes about 544 Neptune days. In a Neptune year, there are about 89,666 Neptune days.
A day on Neptune is 16 hours, 6 minutes and 36 seconds. A year on Neptune is 164.8 Earth years.
A year on Neptune is 164.79 Earth daysA day on Neptune is 16 h 6 min 36 s
16 Earth hours
The two planets that have the same length of and Earth day but shorter than a Earth day are Neptune and Uranus because a Earth day on Neptune is 18 hours and 30 minuets Earth time, And Uranus is 17.24 hours. Thus Neptune and Uranus is closest to an Earth day being below 23 hours and 56 min (24 hours rounding).
16 hours, or more precise 0.67125 earth days.
16.11 hours.
16.5 Earth Hours.
There are about 0.6713 Earth days or about 16 hours, 6 minutes, 36 seconds in a day on Neptune. (see related link on Neptune)16.11 Earth hours
A day on Neptune is 16 hours, 6 minutes and 36 seconds.
That is exactly one day on Neptune.
A day on Neptune is 16 hours, 6 minutes and 36 seconds. A year on Neptune is 164.8 Earth years.i