Creative. Accurate. These words contribute to the topic of Ancient Egyptian calendars. They figured out that their calendar had miscalculations and they corrected their misleading by arranging a new calendar, but this one was a solar calendar, based on one of their stars. They had a 12 month lunar calendar TEMPORARILY. They used their resources to create such mind boggling technology for telling time such as the water clock, the 2 pots, and the stick.