Dawn Of A New Day Meaning

(idiomatic) A new beginning; a fresh start; an important, promising turning point.

Example: 1881, Georg Ebers, The Emperor (Der Kaiser) trans. Clara Bell, ch. 15,
  A distant gleam shone through the weight of his troubles, seeming to promise the dawn of a new day.
1914, H. G. Wells, "The World Set Free," section 8.
  This—this is the dawn of a new day in human living.
2007, Michael Cusenza, "New Leader Selected For Queens Chamber," Queens Tribune Online, 29 Nov.,
  It’s the dawn of a new day—a new era, even—for the Queens Chamber of Commerce.