In Hinduism, Brahma muhurta (time of Brahma) is a period (muhurta) one and a half hours before sunrise or more precisely is 1Hr 36 Mins. i.e. 96 Minutes = 2 Muhūrta or 4 Ghaṭīkā,and lasting for 48 minutes, is recommended in all practices of yoga is traditionally considered most apt for meditation, worship or any other religious practice. .
During the hour before dawn, saints and yogis establish themselves in their yogic pose, facing north, chant Omkar, and meditate on Brahma (or Surya, or other devotees of Vishnu, or Lord Vishnu Himself). Yogis believe that during this pre-dawn period, the aspect of Brahma is prevalent in the atmosphere. As a result, the entire atmosphere in is charged with powerful electro-magnetic-intelligent carriers generally called spiritual vibrations that travel in a north-south direction. Aspirants sit in the opposite direction of the flow(flow direction is given from north to south)i.e. facing north direction and meditate on their deity or Omkara Brahman. With this their expectation is that their minds will be spiritually linked in those powerful vibrations. The desired result is to obtain communion with the Yogis and saints spiritually; that their minds will freely float and get merged in that peaceful and serene atmosphere; and that they will receive blessings and guidance. Aspirants who follow this meditation method are said to quickly evolve in their Sadhana or practice.