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The Tamul and Telugu both used the same system of time keeping, which was derived from ancient Hindi methods and was based on a 60-hour day, the word "ghurry" meaning an hour (24-minute period):
The standard method of time keeping was the water clock which was used by the Hindus and other peoples of India for thousands of years going back. The water clock was known as the "ghurry al" and was typically made of copper, brass or gold. The ancient Hindu water clock is known explicitly from a detailed description by Lalla, the famous 8th century Indian astronomer (qv).