[Aztlan] Aztlan: Solstice Sunrise Locations

[Mesoman1 at aol.com]

Greetings,
 
I would like to know how the location of the Summer Solstice sunrise can be  
determined. I have the specific location of an Early to Middle Formative 
period  site (c. 1500-400 BC) in southern Veracruz and would like to know where, on 
the  horizon (i.e., degrees east of north) the sunrise would have occurred at 
 approximately 1000 BC. 
 
Estimates for the contemporary period (AD 2000-2005) are available, but was  
the location different 3000 years ago?
 
Anyone with information that may help can respond to me off-list.
 
Thanks.
 
Travis Doering