The observation of Alcor (Arundhatī) moving ahead of Mizar (Vasiṣṭha) as described in Mahābhārata Bhīṣmaparva 2.31 is central part of the dating of Mahabharata to 5561 BCE by Mr. Nilesh N. Oak [1]. Oak insists that the dating of Mahabharata must fulfil this condition. However, the context ...