Dhanurmas or Dhanur Masa is also known by the names Chapa Mas, Kodanda Mas, Karmuka Mas etc. Chapa, Kodanda, Karmuka, etc., in Sanskrit, are synonyms of Dhanus; meaning a bow. It is the month of margashira and so also called Margazhi masam in Tamil. Lord Sri Krishna says in Bhagavad-gita,