The same is the duration of Brahman's night. With the beginning of Brahman's day the universe begins to come into being. During the period of universal dissolution the Creator sleeps, in Yoga-meditation. When the period of sleep expires, He awakes.
रात्रिमेतावतीं चैव तदादौ विश्वमीश्वरः। प्रलये ध्यानमाविश्य सुप्त्वा सोऽन्ते विबुद्ध्यते॥