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Roshar has 0° of Axialaxial tilt.{{wob ref|11448}} Due to having no obliquityaxial tilt, the sun runs along the equator. Rosharans can easily geolocate themselves and tell time by the path and location of the sun.{{book ref|sa2|87}}{{book ref|sa3|57}}{{epigraph ref|sa3|84}}{{book ref|sa1|i|5}}{{book ref|sa4|64}}{{book ref|yumi|4}} The orbital period of Roshar is around 1.1 standard years.{{wob ref|8928}}{{wob ref|3781}}{{wob ref|5569}}{{wob ref|10572}} The solar day of Roshar is around 20 rosharan hours, and there are around 500 solar days in a year.{{wob ref|248}}
The partial pressure of oxygen in the atmosphere of Roshar is higher than standard cosmere.{{au ref|roshar}}{{wob ref|1806}} There are no oil deposits from mass extinction events on Roshar.{{wob ref|15003}}
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