However, the night vigils are performed by the seers and the knowers of truth in the midst of the night, when the old day ends and the new day begins; for that is a time of Kemal which offers to the soul a perfect stillness. When the sun is at the zenith, that is Kemal also, but it has not the quiet of midnight; and therefore it is considered by those who know things inauspicious for taking up any enterprise.