Pre-History

Zenithal Sun - August 13

Site of Izapa

Ceremonial Centers - 1300 BC

Orientation of Sites - Guatemala

Ceremonial Centers - 1000 BC

Orientation of Sites - Southern Veracruz

Orientation of Sites - Northern Veracruz

Ceremonial Centers - 500 BC

Zenithal Sun - July 26

Ceremonial Centers - AD 1

Orientation of Sites - Plateau of Mexico

Site of Teotihuacán

Long Count - Formative Sites

Orientation of Sites - Petén

Ceremonial Centers - AD 500

Long Count - Classic Sites

Site of Tikal

Postulated Diffusion of 260-Day Calendar

Native States at Time of Spanish Conquest

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