The Ancient Egyptian Calendar was a solar calendar consisting of 365 days divided into 12 months of 30 days each, plus an additional 5 days at the end of the year. Each month was divided into three weeks of ten days. This calendar was crucial for agricultural activities, helping to predict the annual flooding of the Nile River, which was vital for farming. The calendar was also linked to various religious festivals and events. The Egyptians named their months after seasonal changes and important deities, reflecting their deep connection to nature and spirituality. This system laid the groundwork for future calendars used in Western civilization.