In the present article, based on Masnavi Manavi and Divan Shams, “the phenomenon of night” will be looked at in four parts. In the first part, which is called “nights and its appurtenances” the relationship of night and day, the crack of dawn, sleeping, calamity occurring in the night, keeping nightly vigil are studied. Jalal al-Din Rumi believes Eternal beloved manifests himself in the night and at dawn and the calamities occurring in the night prevents the manifestation of the beloved. In the second part, “the features of night”, the following themes are considered: superiority of night over day, purity of night, and night as the place of manifestation of God. Rumi believes, by contemplating and staying away from hypocrisy, man can understand the Divine Oneness at night. In the third part, we consider the mystical meanings of “night” from Rumi's point of view. And finally, in the fourth part, the Blessed Night (Shabe Qadr), night of Ascension (Shabe Meraj), as the special nights that the mystic can reach union with the Beloved, is considered.