The online debate for dating Mahabharata is going strong between 3067 BCE and 5561 BCE groups on Twitter and YouTube.
Both these years conjecture that there was an Adhika Masa during the year of Mahabharata War.
But are there any explicit mentions of Adhika masa during Mahabharata War or any mentions of how Adhika Masa is calculated to exist or not in a particular year, in entire Mahabharata literature?