The difference between Aztec and Egyptian religions was that the Aztecs practiced human sacrifice, but the Egyptians did not. See, both the Aztecs and the Egyptians had a two-calendar system -- the Egyptians had one religious and one civil, whereas the Aztecs had the tonalpohuali (the sacred calendar that kept track of the days designated for certain gods and rituals) and the xiuhpohuali (a calendar that kept track of what days to begin planting or start harvesting crops). In essence, the rituals performed according to the tonalpohuali calendar included human sacrifice.
