The phrase "passage through time" refers to the process of moving from one era to another. It can be used to describe a historical event or the aging process of an individual. There are many synonyms that can be used to convey this idea, including "temporal transition", "time travel", "chronological progression", "historical movement", and "evolution of time". These words allow us to express the idea of the changing nature of time and its impact on individuals and societies. Whether we are looking back on the past or anticipating the future, these synonyms help us to better understand the passage of time and its effects on our lives.