Convert Hour to Century

The concept of dividing the day into hours dates back to ancient Egyptian astronomy, where the day was divided into two 12-hour periods, one for daylight and one for nighttime. The Egyptians used large obelisks and sundials to divide the day into 12 segments, leading to the division of the day into 24 hours. This system was later adopted by the Greeks and Romans. The use of 60 minutes per hour comes from the sexagesimal (base-60) numeral system of the ancient Sumerians and Babylonians. Over time, this division became standardized and is still in use today across the world for both everyday timekeeping and scientific purposes.

The word "century" comes from the Latin word "centuria", meaning a group of 100. The concept of dividing time into centuries has roots in the Roman system of organizing time and military units. The idea of measuring time in centuries became more formalized during the Middle Ages, as historians began to structure history into manageable periods for recording and analysis. By the time of the Gregorian calendar, the century became a standard way to refer to a 100-year span, often used to discuss developments in history, such as "the 19th century" or "the 21st century." The century is now a common unit used in various fields like history, economics, and demographics.