Existence is measured in age. How many years has a mortal lived? What was the construction date of the Parthenon? When were the cosmos formed? Time begins at birth, at creation. But, inevitably, time for all things comes to an end. Except, of course, time itself. Bearer of the clock of eternity, rimmed by signs of the Zodiac, the Keeper of Time, Chronos, counts every tick of the second hand, preventing interference with that essential forward momentum.