HODIE (Roman Calendar): ante diem quartum decimum Kalendas Ianuarias.
MYTHS and LEGENDS: The art image for today's legend shows Perseus and Andromeda, and there are more images here.
TODAY'S MOTTOES and PROVERBS:
3-WORD MOTTOES: Today's 3-word verb-less motto is Per mille ardua (English: Through a thousand challenges).
ANIMAL PROVERBS: Today's animal proverb is Piscium vita haec, minorem maior ut devoret (English: This is the life of the fishes: that the greater should gobble up the smaller).
POLYDORUS: Today's proverb from Polydorus is: Nolite iudicare secundum faciem (English: Don't judge based on appearances).
GREEK PROVERBS: Today's proverb is Ἡ κάμηλος ἐπιθυμήσασα κεράτων, καὶ τὰ ὦτα προσαπώλεσεν (English: The camel, wanting horns, lost even its ears... which is an Aesop's fable).
BREVISSIMA: The distich poster for today is Sermo Mollis Frangit Iram. Click here for a full-sized view.
And here are today's proverbial LOLcats:
Avarus animus nullo satiatur lucro.
The greedy soul is satisfied by no amount of profit.
O pessimum periclum, quod opertum latet!
O worst possible danger, which lurks in hiding!
MILLE FABULAE: The English translation for today from the Mille Fabulae et Una book is Leo in Stabulum Ingressus, a story about timing.
PHAEDRI FABULAE: The illustrated fable from Phaedrus for today is Ex sutore medicus, an "ultracrepidarian" story about a cobbler who does not stick to his last Latin text and Smart's translation.
STEINHOWEL: The illustrated fable from Steinhowel for today is de aquila, testudine et corvo, a story about evil characters who cooperate: Latin text and English versions.
GAUDIUM MUNDO: The Latin holiday song for today is a Hanukkah song: Canticum Turbonis.