A year on this planet is only 88 days long
[DOC] [TLE] Mercury Day and Year - Zoom Astronomy - Enchanted Learning [PAR] One day on Mercury (sunrise to sunrise) is longer than one year on Mercury (one 
... Mercurian Year: A year on Mercury takes 87.97 Earth days; it takes 87.97... [DOC] [TLE] BBC - Earth - Are Earth years a bit weird?