The lords of the twelve signs from Mesha onwards are Mars, Venus, Mercury, Moon, Sun, Mercury, Venus, Mars, Jupiter, Saturn, Saturn and Jupiter. The vargas or divisions of any chart are to be noted. The first is the griha or house or sign. A sign has two horas of equal duration. One third of a sign is called a decanate (drekkana). Other subdivisions are saptamsa, navamsa, dvadasamsa and trimsamsa. These are the major seven vargas.