How long is a day on Mars?
Data as of July 2026
24 h 40 minone day
A day on Mars lasts 24 h 40 min. That is 1.0× an Earth day.
▶ Watch Mars turn in 3D
Why Mars's day is like ours
A Martian day, called a sol, is only about 40 minutes longer than Earth's. Mission teams on Earth have lived on Mars time to drive the rovers, shifting their working day later by about 40 minutes every day.
Sunrise to sunrise
24 h 40 min
One spin (against the stars)
24 h 37 min
Compared with Earth
1.0× an Earth day
Mars days in its year
669
Its year
687 Earth days
Distance from the Sun
1.52 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 Mars 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 Found something out of date?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.