The story
Twelve saṅkrāntis divide the solar year, and this one begins it: the Sun returns to the first sign. The lunar calendars begin their year on the new moon of Caitra a few weeks earlier, and India keeps both.
Half the country keeps today under a local name. It is Baisākhī in Punjab, Vishu in Kerala, Puthāṇḍu in Tamil Nadu, Pohelā Boiśākh in Bengal, Bohāg Bihu in Assam, Panā Saṅkrānti in Odisha, Bikram Samvat new year in Nepal, and Songkran across Thailand, Laos and Cambodia, where it arrived with the Indian calendar.
