ODD and EVEN Footed Signs (Ajit Krishnan)
Hence, from the starting sign (Aries) and the starting nakshatra (Krittika), every set of 3 signs/nakshatras are labeled odd-footed and even-footed respectively. Just as the sex of signs was used in matters relating to the human body, the footedness of signs applies in manners which deal with dharma.
For example, Narayana dasa deals with the environment in which we find ourselves, and this is a reflection of our previous karma. This falls under the purview of dharma. When determining dasa lengths, the footedness of signs plays a critical role.