Ἑρμοῦ ἡμέρα

From LSJ

αὐτῇ τῇ ψυχῇ αὐτὴν τὴν ψυχὴν θεωροῦντα ἐξαίφνης ἀποθανόντος ἑκάστου → beholding with very soul the very soul of each immediately upon his death

Source

Russian (Dvoretsky)

день Гермеса, т. е. среда.