δευτεραῖος
From LSJ
Καλὸν τὸ γηρᾶν καὶ τὸ μὴ γηρᾶν πάλιν → Res pulchra senium, pulchra non senescere → Schön ist das Altsein, doch nicht alt sein wieder auch
English (LSJ)
α, ον,
A on the second day, usu. agreeing with the subject of the Verb, δ. ἐκ τοῦ Ἀθηναίων ἄστεος ἦν ἐν Σπάρτῃ Hdt.6.106, cf. X.Cyr.5.2.2, etc.; also τῇ δ. (sc. ἡμέρᾳ) Hdt.4.113.