dog days

Definition

The days following the heliacal rising of Sirius, now in early August (Gregorian) at dates varying by latitude.

Etymology

Calque of Latin diēs caniculārēs (“puppy days”), a calque of Ancient Greek κυνάδες ἡμέραι (kunádes hēmérai, “dog days”), from κυνάς (kunás, “of or related to dogs”), from Κῠ́ων (Kŭ́ōn, “the Dog”) in reference to the star Sirius, which appears in Homeric Greek as "Orion's dog". The return of Sirius to the night sky (its heliacal rising), occurring in antiquity around July 25 (Athens) or 29 (Rome), was considered by the Greeks and Romans to herald what were considered the hottest, least healthy, and least lucky days of summer.

Example Sentences

• "... a sterre, wherof canicular or dogge days be named Dies caniculares."
• "Dog days bright and clear Indicate a good year; But when accompanied by rain, We hope for better times in vain."
• "Why ſhould thoſe Eteſian and Eaſterne winds blow cōtinually in ſome places, at ſet times, one way ſtill, in the dog dayes only: heere perpetuall drought, there dropping ſhowres; [...]"