The word gadi means "time", corresponding with the Koranic term, sa’a. During the Ancient times in India, day and night were measured in gadi instead of hours or minutes. Under this computation, the term "chogadiyu’n" represents a duration of 90 minutes. Clepsydras were regulated to measure the time and ghadiyal or gong to announce the hour to the people in principal towns. Generally, a day is also divided into 8 parts (not that of pahor), each part contains 1 hour and 30 minutes. The first part starting with the sunrise on that day, and last part ending on sunset on that day approximately for the day times. Similarly, there are 8 parts starting with sunset of current day and ending at sunrise next day.