Mahabharata 14.86.8

उपस्थितश्च कालोऽयमभितो वर्तते हयःमाघी च पौर्णमासीयं मासः शेषो वृकोदर

upasthitaśca kālo'yamabhito vartate hayaḥmāghī ca paurṇamāsīyaṃ māsaḥ śeṣo vṛkodara

Our plain-language meaning of this verse is waiting for scholar review.