The sun enters Dhanupan-Hindu
This is a solar marker rather than a lunar one: the sun enters Dhanu, and a month begins that is kept quite differently from those around it. In the temple traditions of the south it opens Dhanurmasa, a month of pre-dawn worship, and in Odisha it opens a season of its own. It is one of the twelve sankrantis and the calendar reckons it exactly as it reckons Makar Sankranti a month later.