Size does not affect year length, as years are determind by the distance the planet is from the sun. There have been gas giants in other systems discovered that speed about the parent star in 1-2 days. Logically the distance from the sun would be similar to that of Earth, given the climate. But this is an example of selective accuracy. If Oddworld truly is ten times the size of Earth then the gravity would be much stronger. Regardless of the explainations for this, the implications for climate, plate tectonics and just about every other geological, biological and environmental aspect would be affected in huge ways because of the massive area of the crust, the Coriolis effect, speed of rotation and the length of days...
Better of move it into the blind spot of your mind and apply Earth-norm standards to it until they are officially stated otherwise.
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