On a timeline, if Date 0 is the beginning of the first year, and date 1 is the end of the first year, similarly, date 1 is the beginning of the second year, and date 2 is the end of the second year. By denoting time in this way, date _____ signifies both the end of year 1 and the beginning of year_____, which makes sense since those dates are effectively the same point in time