Πέμπτη Ἱσταμένου, V day
From today’s sunset: fifth day of Gamelion.
“Beware of all the fifth days; for they are harsh and angry; it was on the fifth, they say, that the Erinyes assisted at the bearing of Horkos, whom Eris bore, to be a plague on those who take false oath.” - “Shun the fifth days: i.e. the lunar days. We have heard from the Pythagoreans that the number five is number of Dike, and among them are told the causes of this..as She punishes all those who stray from the divine law, as told by Plato (Laws IV, 716a).”
Scholia to Hesiod, Erga, 802-804
Five is also the number of Nemesis, of Πρόνοια (Providence), of Δίκη (Justice), it is also called Βουβάστεια, “because She is venerated in the Egyptian Temple of Bubastis” (“Of Bubastis”, main centre of worship of the Goddess Bastet, identified with Artemis), Aphrodite, Gamelia, Ἄμβροτον (Immortal, Divine), Pallas, Καρδιᾶτιν (“Essence and / or function of the heart) "because it looks like the heart that, in living beings, is at the center.” (from. Iambl. Theol. ar. 40-41)
(Dikaiosyne with scales, cornucopia and the kalathos. From Bithynia, 128-136/7 CE. Munzen & Medaillen AG FPL 325 (July 1971), no. 20)