"When the Hurly Burly's done,
When the Battle's lost and won."
What Hurly Burly? What Battle? That in which Macbeth is then engaged? And which is to be brought to issue ere "set of sun" of the day on which "enter Three Witches?"
NORTH.
Let it be so.
SEWARD.
"Upon the heath,
There to meet with Macbeth."
The Witches, then, are to meet with Macbeth on the heath on the Evening of the Battle?
NORTH.
It would seem so.