The story
The year has two halves. From Makara Saṅkrānti the Sun travels north (Uttarāyaṇa) and the days lengthen; from Karka Saṅkrānti it turns south (Dakṣiṇāyana) and the nights begin to win. The texts call the northern half the day of the gods and the southern half their night.
The southern half is the season of the rains, of the monsoon retreat of monks, of the ancestors' fortnight, of Navarātri and Dīpāvali. It is given to inner work, austerity and worship rather than to beginnings; weddings and thread ceremonies wait for the Sun to turn back.
In Tamil Nadu the month that opens today is Āḍi, kept for the Goddess with pots of pongal cooked in the streets on Āḍi Perukku (the eighteenth day) when the rivers rise.
