MB Free Astrology Nithya Yoga calculates your birth yoga or nitya yoga. "Yoga" means an "union" or "relationship" or angle between the longitudes of the sun and the moon. They are also known as Yoga Taras of Nakshatras (Birth Star). Yogas help in finding out the auspiciousness of the day. MB Free Astrology Nithya Yoga helps you find the ruling yoga at the time of your birth. The Yoga of a person represents his characteristics and nature.