E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
When it begins. (1) With sun-set: The Jews in their sacred year, and the Churchhence the eve of feast-days; the ancient Britons non dierum numerum, ut nos, sed noctium computant, says Tacitushence sennight and fortnight; the Athenians, Chinese, Mahometans, etc., Italians, Austrians, and Bohemians. (2) With sun-rise: The Babylonians, Syrians, Persians, and modern Greeks. (3) With noon: The ancient Egyptians and modern astronomers. (4) With midnight: The English, French, Dutch, Germans, Spanish, Portuguese, Americans, etc.
A day after the fair. Too late; the fair you came to see is over.
Day in, day out. All day long.
Sewing as she did, day in, day out.W. E. Wilkins: The Honest Soul.
Every dog has its day. (See under DOG.)
I have had my day. My prime of life is over; I have been a man of light and leading, but am now out of the swim.
Old Joe, sir was a bit of a favourite once; but he has had his day.Dickens.
I have lost a day (Perdidi diem) was the exclamation of Titus, the Roman emperor, when on one occasion he could call to mind nothing done during the past day for the benefit of his subjects.
To-day a man, to-morrow a mouse. In French, Aujourdhui roi, demain rien. Fortune is so fickle that one day we may be at the top of the wheel, and the next day at the bottom.