Albert Einstein said that "Time is an illusion." But John Archibald Wheeler said, "Time is what prevents everything from happening at once."
Yet important dates may help you organize a Continuity and Change Over Time essay.
Of course, to keep our practice interesting, the dates will not always be in chronological order.
Chronology: the arrangement of events or dates in the order of their occurrence (Oxford Dictionary)
P.S. Dates before the common era will be designated with B.C.E. However, dates during the common era will not be designated C.E. It is assumed that a date without a designation occurs in the common era.