What unusual conditions does Pip observe on his way to Joe's place in Chapter 58 of "Great Expectations"?

As he makes his way to Joe's place, Pip finds the area curiously quiet.  The school-house where Biddy is mistress is on holiday; no children are there, and the nearby house where Pip believes Biddy lives is silent.  Pip proceeds to the forge, and as he approaches it he listens for the familiar "clink" of Joe's hammer, but oddly, he hears nothing.  As the forge comes into view, Pip is dismayed to note that it is closed - "no gleam of fire, no glittering shower of sparks, no roar of bellows; all shut up, and still".

Joe's house, however, is not deserted, and it seems that "the best parlour" is in use this day, for there are "white curtains fluttering in its window, and the window (is) open and gay with flowers".  Pip finally then sees Joe and Biddy, "arm in arm"; for it is their wedding day!" (Chapter 58).