Yuga, Yug n. (Hindoo Cosmog.) Any one of the four ages, Krita, or Satya, Treta, Dwapara, and Kali, into which the Hindoos divide the duration or existence of the world.
... start for that direction. Another explanation is that the head of the earth lies towards the north, and yet another that in the Satyug or beginning of time the sun rose in the north; and in each succeeding Yug or era it has veered round the compass until now in the Kali Yug or Iron Age it rises in the east. In Chhattisgarh, before burying a corpse, they often make a mark on the body with butter, oil or soot; ... — The Tribes and Castes of the Central Provinces of India - Volume II • R. V. Russell