Cultural anthropological history of the ‘Traditional New Year’ which is celebrated on month of April, goes back to an ancient period in Sri Lankan history. People think that the celebration of new year is the change of thoughts too. Various beliefs, perhaps those associated with fertility of the harvest, gave birth to many rituals, customs, and ceremonies connected with the New Year. The advent of Buddhismin the 3rd century BC led to a re-interpretation of the existing New Year activities in the Buddhism light[citation needed]. The majority of the people in the country are Buddhists, and as such, the Buddhistic outlook was predominant in transforming the New Year rites to what they are now.
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https://en.wikipedia.org/wiki/Sinhalese_New_Year
