Nevernight is the common term for night in The Nevernight Chronicle. Because true darkness only arrives in Itreya once every two and a half years, Itreyan days are determined by the winds. The day lasts until the "turn", the changing in the winds. Once the winds change, or turn, the "night" begins, but since the suns do not set and remain high and burning in the sky, it is referred to as the "nevernight", due to the lack of darkness, and hence, actual night.