The symbolic setting of a show at some turning point in history, which is said to promise exciting new opportunity to those characters who are prepared to meet it, though they had no part in making it begin.
- Oklahoma! is set in 1900, when Indian Territory is about to become a state.
- The Little Foxes is set at the turn of the twentieth century, which will make the Hubbards rich from the business deal they have just closed with William Marshall.
- Hair: "This is the dawning of the Age of Aquarius..."