Talk:Seasons/@comment-70.92.179.184-20140412163521/@comment-24103176-20140412171738

Autumn starts on day 1 and ends on day 20. 20 days.

Winter starts on day 21 and ends on day 36. 15 days.

Spring starts on day 37 and ends on day 57. 20 days.

Summer starts on day 58 and ends on day 73. 15 days.

Autumn starts again on day 74 completeing on in-game year.

That's how it works and that's what the graph shows.