A day on Mars is about 24 hours 39 minutes long, so roughly 40 minutes longer than an Earth day.

Quick Scoop: How long is a day on Mars?

  • A Martian day (called a “sol”) is about 24 hours, 39 minutes, and 35 seconds.
  • That’s about 1.027 Earth days, or roughly 40 extra minutes compared with an Earth day.
  • Mars’s sidereal rotation period (one spin relative to the stars) is about 24 hours, 37 minutes, 22 seconds.

Because the content you asked for uses HTML tables, here’s a compact one:

[1][3][5][7] [3][7] [5][7][1][3] [7]
Type of day Mars duration Earth comparison
Solar day (“sol”) ≈ 24 h 39 m 35 s ≈ 40 minutes longer than Earth’s 24 h
Sidereal day ≈ 24 h 37 m 22 s Very close to Earth’s 23 h 56 m

If you tried to live on Mars time on Earth, your watch would drift about 40 minutes later every day until your “noon” happened in the middle of the night.

Why it’s slightly longer than Earth’s day

  • Mars rotates at almost the same speed as Earth, which is why its day length feels familiar.
  • Because Mars is also orbiting the Sun in the same direction it spins, it has to rotate a tiny bit more each day for the Sun to appear in the same spot in the sky, stretching the solar day to about 24 h 39 m.

An easy way to picture it: imagine a clock that runs just a bit slow—each “day” on that clock ends a little later than the last, and over time the difference adds up.

Little story: living on “Mars time”

When NASA teams operate Mars rovers, some engineers actually shift their schedule to Mars time.

Because each sol is about 40 minutes longer, their workday slowly walks around the clock: after a few weeks, they’re working in the middle of the night local time, then slowly cycle back to daytime.

It’s a small preview of what future Mars settlers will face—deciding whether to sync life to the Red Planet’s natural sol or keep some ties to Earth’s 24‑hour rhythm. TL;DR: A day on Mars (a “sol”) lasts about 24 hours 39 minutes, roughly 40 minutes longer than a day on Earth.

Information gathered from public forums or data available on the internet and portrayed here.