How long is a day on Pluto?
Data as of July 2026
6.4 Earth daysone day
A day on Pluto lasts 6.4 Earth days. That is 6.4× an Earth day, and Pluto spins backwards compared with most of the planets.
▶ Watch Pluto turn in 3D
Why Pluto's day is so long
Pluto and its largest moon, Charon, are locked face to face: each keeps the same side to the other, and Charon's orbit takes the same 6.4 days as Pluto's spin. From one side of Pluto, Charon hangs motionless in the sky; from the other it is never seen at all.
Sunrise to sunrise
6.4 Earth days
One spin (against the stars)
6.4 Earth days, backwards
Compared with Earth
6.4× an Earth day
Pluto days in its year
about 14,200
Its year
248 Earth years
Distance from the Sun
39.48 AU
Day length on every world
| World | Day (sunrise to sunrise) | One spin |
|---|---|---|
| Jupiter | 9 h 56 min | 9 h 56 min |
| Saturn | 10 h 39 min | 10 h 39 min |
| Neptune | 16 h 7 min | 16 h 7 min |
| Uranus | 17 h 14 min | 17 h 14 min (backwards) |
| Earth | 24 h 0 min | 23 h 56 min |
| Mars | 24 h 40 min | 24 h 37 min |
| Pluto | 6.4 Earth days | 6.4 Earth days (backwards) |
| Venus | 117 Earth days | 243 Earth days (backwards) |
| Mercury | 176 Earth days | 58.6 Earth days |
Earth's spin, against the stars, takes 23 h 56 min; the extra four minutes to a 24-hour day come from Earth moving along its orbit while it turns. On Pluto the same effect is too small to matter.
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✓ Facts verified July 2026
Every figure on this page is a real, rounded value checked against primary sources. Found something out of date? See how we keep it accurate.