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Message: <blockquote data-quote="paradox42" data-source="post: 5824279" data-attributes="member: 29746">Of course a year makes sense in a system where the sun goes around the world. That's how Earth humans thought Earth worked, for thousands of years, don't forget! The key point here is that the very idea of a "year" as a unit of time only makes sense in context with seasons. That was how and why ancient humans of Earth started counting years; what they were really doing was counting when seasons would start and end. The fact that we don't think of it that way today is irrelevant; the concept of a year is inextricably linked to the concept of seasons.If this planetdisc has a sun that orbits it, but it still manages to have seasons, then the inhabitants of the planetdisc will work out what a "year" is by how long it takes the seasons to complete one cycle. That idea of having two suns which happen to be very close together is a good one, I think; you could have one white star and one red, or something similar- then one season gets named the "red winter," for example, whereas half a year later the season is the "white winter." Makes perfect sense- and then you get names for holidays to mark the seasonal shift, too. Two of the equinoxes would be "pink," perhaps.</blockquote>