The book initially introduces the basic principles of ancient calendars and the challenges of reconciling lunar and solar cycles. Subsequent chapters delve into the structure of the Etruscan year, examining the names and sequence of months, the connection between the calendar and religious festivals, and the mechanisms of timekeeping. This approach reveals how specific dates held importance in Etruscan religious practices, offering insights into their cultural and intellectual landscape.
The book culminates in a detailed analysis of the Etruscan calendar's influence on the early Roman calendar, highlighting elements demonstrably adopted or adapted, thus underscoring the Etruscans' lasting impact on world history.