One earth day is 24 hours, how many hours is a day on each planet?

Answer 1

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Mercury: 58.65 Earth days

Venus: 243 Earth days (spins backwards compared to most other planets)

Mars: 24 hours 37 minutes

Jupiter: 0.41 Earth day (9.8 Earth hours)

Saturn: 0.44 (10.2 Earth hours)

Uranus: 0.72 or 17.9 Earth hours (spins backwards compared to most other planets)

Neptune: 0.67 (19.1 Earth hours)

Pluto: 6.39 (spins backwards compared to most other planets)

Source(s): http://www.jpl.nasa.gov/solar_system/

Answer 2

It depends on how far the planet is away from the sun, the also how fast it roates round it.