How long is stellar year on Mars?

687 Earth days
423 Earth days
183 Earth days
121 Earth days
The Martian year is almost twice longer than Earth's year.
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Answers by country

687 Earth days
423 Earth days
183 Earth days
121 Earth days
answers
flagUnknown
75%
16%
0%
8%
12
flagAustria
52%
40%
4%
4%
25
flagthe United States
45%
41%
7%
5%
85
flagIndia
38%
33%
16%
10%
168
flagGermany
36%
38%
16%
7%
115
flagPakistan
33%
33%
33%
0%
12
flagPoland
29%
28%
17%
24%
3057
flagAustralia
25%
54%
4%
16%
24
flagthe United Kingdom
21%
56%
13%
8%
37
flagCanada
18%
63%
18%
0%
11