Origins and Significance of Christian Feasts is a deeply researched yet accessible volume that illuminates the evolution of Christianity's major festivals from their ancient roots to the modern day. Drawing from an extensive study of historical sources, the book provides a comprehensive exploration into how these feasts emerged, developed over the centuries, and ultimately disseminated throughout churches worldwide. Bridging the gap between specialized academic research and accessible historical narrative, this book delves into the profound questions of what we celebrate, why we celebrate, and how these celebrations came to be. From Julius Caesar's calendar reforms to Constantine's revolutionary restructuring and the gradual Christianization of time, readers are offered a nuanced understanding of how our current organization of time is a tapestry woven from pagan and Christian threads alike.