A day on Uranus is much shorter than an Earth day: 17 hours, 14 minutes and 24 seconds. With Mars, it’s the opposite—it’s longer.
A Mars day, called a sol, is 39 minutes and 35 seconds longer than an Earth day.
Which means, one would have to stay awake for about 40 minutes longer every day. Maybe, it’d give people on deadline more time to wrap up their work. But what might be productive, even fun for a day, will in the longer run, leave one sapped considerably.
In aggregate, the extra time put in daily, would amount to traversing through two time zones, every three days.
h/t: SCIENTIFIC AMERICAN