Answer: There is not day or night in spirituality. The spreading of the Light in the desire is called day and the exit of the Light from the desire is called evening or night.
Question: And what about the cycles, like the cycle of the day, for example?
Answer: There are cycles in spirituality but on different dimensions, in other concepts. A person who enters the spiritual world undergoes an upgrading to different concepts and there is a totally different definition to the concept of “day,” “night,” “time,” “I,” and “peace.” All the definitions totally change, transform, and take on a new shape, a rebirth.
From the Kabbalah Lesson in Russian 3/19/17