Just posting here cause Ran told me I have to in order to be able to edit the wiki. I want to add "Calendar", maybe aliases seasons, winter, summer to the wiki, content: "Years have no correlation to seasons. There will be an explanation for the seasons, GRRM has said, and it will not be a scientific one. But science, namely astronomy, can tell us how a year is determined. As a planet makes its yearly orbit of its sun, various stars will appear at various points in the sky, varying about 30 degrees a month, in a 12 month year. So the maesters will have a pretty good idea, if the look at the heavens at, say, midnight of each new moon, of when a year has passed, astronomically. Assuming years are of fixed duration, such observations would not even be needed - merely a calendar with a count of days. I imagine the maesters would check the stars anyway, from time to time, because they do things like that, and to make sure things do not get too far out of whack calendrically. " cited from: http://asoiaf.westeros.org/index.php/topic/45393-time-in-westeros/ Thanks for the great site!
