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Roshar has 0° of Axial tilt.{{wob ref|11448}} Due to having no obliquity, the path and height of the sun is consistent in relation to one's coordinates and the time of day, runningruns along the equator,. thus oneRosharans can easily geolocate oneselfthemselves 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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