that were in charge of being priests within the city of Cuzco. These ten groups of nobility were called panacas. The panacas had a vital role to Incan society in Cusco because they were in charge of worship for the deities. All of the religious aspects that took place around the city were organized and arranged by this special group of nobility. The members of these ten groups were said to have a first royal ancestor that had conquered the valley. The panacas were decided through mother's rank, fraternal succession, choice, and the success and honor of the individual on the battlefield. These ten groups were then divided into two smaller groups, one representing Hanan who lived north of the valley river and also Hurin who lived south of the valley river. The Hanan and Hurin each consisted of five groups of nobility. It is known that the first group of each of the Panacas dedicated all their sacrifices to the sun. The remaining four were in charge of dedicating their sacrifices to Moon, Thunder, Virachoa, and the Earth. These groups of nobility made up the upper most tier of society and they were highly revered and respected throughout the empire. These fives gods or entities that received the majority of sacrifices within Cusco represent the most vital aspects of Incan life. The Sun God represented the institutional organization of the society because everything in Incan life revolved around the Sun. Virachoa is also known as Apu Qun Tiqsi Wiraqutra and is considered the creator of civilization. He is one of the most if not the most powerful gods in Incan mythology. The sacrifices done towards Virachoa represents how much the Incans relied on outside forces to explain events in their daily lives. The sacrifices towards Thunder represent the handling of transitions in life and society. The sacrifices towards Earth and Moon show the fertility of the Earth and nature. All ten groups of nobilities had the responsibility to explain and account for all the occurrences of the natural world in and outside of the Incan empire. Festivals The Inca calendar had 12 months of 30 days, with each month having its own festival, and a five-day feast at the end, before the new year began. The Incan year started in December, and began with Qhapaq Raymi, the magnificent festival. The Qhapaq Raymi was the first and biggest festival of