Dividing the circle of horizon into eight equal quarters beginning from the east and going round, corresponding to the eight Yamas (a Yama is 3 hours) from sunrise to sunrise, the quarter which corresponds to a particular Yama of the Sun in his daily motion is known as Dīpta (malefic). The quarter next before it just quitted by the Sun is known as Aṅgāri and the quarter next after Dīpta is known as Dhūmini. The other five quarters are known as Śānta (benefic). The first three, viz., the Aṅgari, the Dīpta and Dhūmini quarters relate to bad events past, present and future respectively according as the omen occurs in such quarters.