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Difference between revisions of "Roshar"
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Roshar has 0° of axial tilt.{{wob ref|11448}} Due to having no axial 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.{{book ref|tsm|11}}{{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}}
To combat this, the [[Herald]]s made a deal with Honor called the [[Oathpact]]. This deal sealed away the Fused on Braize. However, there was a loophole. The Heralds could choose to allow the Fused to return to Roshar, so they were caught on Braize and tortured. The return of Heralds and Fused and the conflict that occurred became known as the Desolations.{{book ref|sa3|38}} The spren started to mimic the herald's [[Honorblade]]s and the [[Knights Radiant]] were formed. They helped to fight and rebuild society after a Desolation.{{book ref|sa2|4}}
Time during this period was separated into several-century long Epochs, which are further separated into years.{{book ref|sa1|19}}{{book ref|sa1|38}} The exact method for defining when
The time between each Desolation grew shorter with each subsequent Desolation. At first there were centuries between Desolations, which eventually shortened into decades, which finally became a single year between the Last Desolation and the one directly before it.{{book ref|sa1|38}}
==== The Last Legion ====
Each week is made up of five days,{{book ref|sa1|14}} with a month being made of ten weeks or fifty days,{{book ref|sa1|27}} and a year on Roshar is 500 days long, ultimately defined by the time between two [[Weeping]]s.{{book ref|sa2|46}}
Although the Rosharan year is 500 days long, these days are shorter than usual, coming in at 20 Rosharan hours, which are themselves cut down into 50 Rosharan minutes.{{ref|text=A Rosharan hour is slightly shorter than an Earth hour, roughly 0.964 hours.{{wob ref|8086}}|group=fn}}{{wob ref|8928}} Consequently, a Rosharan year is only 10% longer than the cosmere standard.{{wob ref|8086}}{{au ref|Rosharan}}{{book ref|tsm|11}}
Other cultures across Roshar have different calendars, which consequently leads to differences in recorded year between nations and cultures. One culture known to make use of a different calendar are the Unkalaki. The Tukari and Emuli, and potentially the Azish in general, in which whose reckoning deems the period from Vorin year {{rosharan date|1167}} and {{rosharan date|1174}} to be in the eighties of an unclear century and millennium.{{book ref|sa2|i|14}}{{book ref|sa3.5|16}}{{wob ref|14531}}
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