dog days

Definition from Wiktionary, the free dictionary
Jump to navigation Jump to search
See also: dogdays


English Wikipedia has an article on:


Calque of Latin diēs caniculārēs (puppy days), a calque of Ancient Greek κυνάδες ἡμέραι (kunádes hēmérai, dog days),[1] from κυνάς (kunás, of or related to dogs), from Κῠ́ων (Kúōn, the Dog) in reference to the star Sirius, which appears in Homeric Greek as "Orion's dog".[2] 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.[3]


  • (file)


dog days pl (normally plural, singular dog day)

  1. (archaic) The days following the heliacal rising of Sirius, now in early August (Gregorian) at dates varying by latitude.
  2. The unpleasantly hot days of late summer.
    • 2013 August 17, "A Rickety Rebound" in The Economist, Vol. 408, No. 8849:
      The dog days of August have often spelled trouble for the world economy.
  3. Any similar period of inactivity, laziness, or stagnation.

Usage notes[edit]

Historically, the dog days have been variously reckoned from the cosmical or heliacal rising of Sirius in Canis Major or Procyon in Canis Minor, all of which vary by latitude and do not occur for most of the Southern Hemisphere.[3] Sirius observes a period of almost exactly 365¼ days between risings, keeping it largely consistent with the Julian but not the Gregorian calendar; nonetheless, its dates occur somewhat later in the year over a span of millennia. These variations have caused the dog days to be reckoned as starting anywhere from 3 July to 15 August and lasting anywhere from 30 to 61 days.[3] Canonical "dog daies" were observed from July 7 to September 5 in the 16th-century English liturgies.[4][5] Modern almanacs sometimes give the days as 3 July to 11 August,[6] ending rather than beginning with the heliacal rising of Sirius.




  1. ^ "dog day" on Oxford Dictionaries, Oxford: Oxford University Press.
  2. ^ As κῠ́ων Ὠρίωνος (kúōn Ōríōnos) in its elided accusative form "κύν᾽ Ὠρίωνος" (kún'Ōríōnos) in Iliad XXII.22.
  3. 3.0 3.1 3.2 "dog day, n." in the Oxford English Dictionary, Oxford: Oxford University Press.
  4. ^ "The Table and Kalendar..." in The Boke of Common Prayer... (1552), London: Edward Whytchurche.
  5. ^ "The Table and Kalendar..." in The Boke of Common Praier... (1559), London: Richard Grafton.
  6. ^ "Dog Days Begin" in The Old Farmer's Almanac (2017), Dublin: Yankee Publishing.