It faded on the crowing of the cock.

Some say that ever 'gainst that season comes

Wherein our Saviour's birth is celebrated,

The bird of dawning singeth all night long:

And then, they say, no spirit dares stir abroad;

The nights are wholesome; then no planets strike,

No fairy takes, nor witch hath power to charm,

So hallow'd and so gracious is the time.

William Shakespeare (1564-1616): Hamlet. Act i. Sc. 1.