in Chronology, a cycle of 12 years; in use among the Turks and Cathayans.

Each year of a giach bears the name of some animal: the first that of a mouse; the second that of a bullock; the third of a lynx or leopard; the fourth of a hare; the fifth of a crocodile; the sixth of a serpent; the seventh of a horse; the eighth of a sheep; the ninth of a monkey; the tenth of a hen; the eleventh of a dog; and the twelfth of a hog.

They also divide the day into 12 parts, which they call giaghts, and distinguish them by the name of some animals. Each giagh contains two of our hours, and is divided into eight kehs, as many as there are quarters in our hours.