Skandapurana 5.154.16

5.154.16

yathā tāvaśvinau tatra devavaidyau vyavasthitau ..
āśvine māsi cāśvinyāṃ pūrṇimāyāṃ tathā tithau .. 16 ..

Likewise, the two Aśvins, the physicians of the gods, who are stationed there:
in the month of Āśvina, on the full moon day during the nakṣatra Aśvinī,