Skandapurana 1.3.31.78

1.3.31.78

yogānāṃ vā vyatīpāta ūḍūnāṃ śravaṇastathā..
amāvāsyā tithīnāṃ ca pūrṇimā vai tathaiva ca.. 33.78 ..

Among yogas, vyatīpāta; among constellations, Śravaṇa; / among lunar days, the new-moon day and likewise the full-moon day;