Astrology comprises of many concepts and uses many tools and methodologies to arrive at predictions. Foremost among them is the Dasa and bukthi based on the moon and the star it occupies. All major predictions are derived from this, but this does not do justice to Lagna or Ascendant. Hence the need to make predictive astrology more complete and more accurate by giving due importance to the lagna.

Just as the moon keeps moving from the first star aswini to the last one revathi the Lagna also keeps moving. This concept which is the brainchild of Mr.Poduvudai Moorthy.,who has spent a lot of time and effort on researching this concept and fine tuning it to suit the current requirement of a proper predictive system.
In the course of his research the author has arrived at the exact speed the lagna travels which is 1 year 1 month and 10 days to traverse one nakshatra pada.It takes 10 years to traverse one zodiac sign so it covers 120 yrs life span of an individual same as vimshottari Dasa.