Atirātra (Atiratra) is the name of one of the ten sons sired by Cākṣuṣa Manu (Chakshusha Manu), ruler of the sixth manvantara (manwantara; epoch), to Naḍvalā (Nadwala). 

Vāyupurāṇa(62.67)
Brahmāṇḍapurāṇa (Maharṣi)(1.36.79, 106)
Matsyapurāṇa(4.42)
Bhāgavatpurāṇa Vols. 1-12(4.13.16)
Viṣṇupurāṇa(1.13.5)