Mahabharata 4.47.3

तेषां कालातिरेकेण ज्योतिषां च व्यतिक्रमात्पञ्चमे पञ्चमे वर्षे द्वौ मासावुपजायतः

teṣāṃ kālātirekeṇa jyotiṣāṃ ca vyatikramātpañcame pañcame varṣe dvau māsāvupajāyataḥ

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