October 11, 2014 – The Indian meteorological department (IMD) website states that Kautilya’s Arthashastra contains records of rainfall and its impact on revenue, as well as details about relief work. Similarly, Kalidasa’s Meghdoot, written around the seventh century, mentions the date of the onset of the monsoon and traces the path of monsoon clouds. Till today, forecasts are made on the same broad lines.