How do we count the years in the common Christian Gregorian calendar?
Anno Domini (AD) or Christian or Common Era (CE) counts the years after the adjusted date of Christ’s incarnation, which traditionally is celebrated annually at 25th March during the former Northward Spring Equinox (NSE). To this count, introduced in sixth century by Dionysius Exiguus, we owe the calendrical numbering of the current years as well as the jubilee with the second millennium. To answer the question of how we calculate years or time at all, it is necessary to describe the worldview and religious background of the age when the time calculation was created. For example, Franz Boll said: Mankind measures time using the stars. Lay people, whose knowledge is based on belief, rather than science, say: “The course of the stars determines time,” and from this, religious people derive the saying that “Heaven guides everything on Earth.” (Boll, 1903). Even in the prayer, the words on earth as in heaven implies that believers and superstitious folk expect good or bad events to come fr
