[6][7] According to Hesiod's Theogony, Hemera left Tartarus just as Nyx (Night) entered it; when Hemera returned, Nyx left:[8] Night and Day passing near greet one another as they cross the great bronze threshold.

According to the Roman mythographer Hyginus, Chaos and Caligio (Mist) were the parents of Nox (Night), Dies, Erebus, and Aether.

[11] While, Hyginus says that, in addition to Caelus, Aether and Dies were also the parents of Terra (Earth), and Mare (Sea).

[15] For example, the geographer Pausanias describes seeing depictions, on the "Royal Portico" at Athens and on the throne of Apollo at Amyclae, of Cephalus being carried off by a goddess whom he identifies as Hemera.

[16] He also describes a stone pedestal at Olympia which depicted Hemera pleading with Zeus for the life of her son Memnon.