Chrona herself was the one exception as her being was derived from the notion of perpetuity itself. Should her clock ever be allowed to stop, all of creation would also come to a halt. The entire accumulation of history would be lost as each and every phenomenon would fade into the void.
Chrona comes from the Ancient Greek word Χρόνος (Chronos, also transliterated as Khronos or Latinized as Chronus) that means "time". As for example Chronometer is the meter of time.
Chronos is the personification of Time in pre-Socratic philosophy and later literature. Chronos was imagined as a god, serpentine shape in form, with three heads—those of a man, a bull, and a lion. He and his consort, serpentine Ananke (Inevitability), circled the primal world egg in their coils and split it apart to form the ordered universe of earth, sea and sky. In the Orphic cosmogony, the unaging Chronos produced Aether and Chaos, and made a silvery egg in the divine Aether. It produced the hermaphroditic god Phanes, who gave birth to the first generation of gods and is the ultimate creator of the cosmos.