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
55%
33%
5%
5%
18
flagthe United States
43%
41%
8%
6%
74
flagIndia
37%
34%
17%
9%
143
flagGermany
35%
38%
15%
8%
89
flagPakistan
30%
30%
40%
0%
10
flagPoland
28%
28%
17%
25%
2842
flagthe United Kingdom
25%
59%
9%
6%
32
flagAustralia
21%
56%
4%
17%
23
flagCanada
20%
60%
20%
0%
10