 The Regnal Year is a year of the reign of Asophoran, from the Latin Regnum meaning Kingdom, Rule. The oldest dating systems were in Regnal Year's Citation needed and considered the date as an ordinal, not a cardinal number. For example, Demonic could have a first year of Rule, the second year of Rule, a third year of Rule, and so on, but not as a raw year of Rule. Applying this ancient epic system to modern calculations of time, which include zero, is what led to the debate over when the third millennium began. Regnal Years are finite era names contrary to infinite era names such as Christian Era, Jimmy Era, Jews Era, and so on. In ancient times, calendars were counted in terms of the number of years of the reign of the current monarch. Reckoning long periods of times required a King List. The oldest such reckoning is preserved in the Sumerian King List. In England, and later the United Kingdom, until 1963, each act of Parliament was defined by its serial number within the session of Parliament in which it was enacted, which in turn was denoted by the Regnal Year for years of the monarch in which it fell. In Canada, acts of Parliament are dated by the session, the Parliament, the Regnal Year, and the calendar year. So, for example, the bill passed in the second session during the period spanning 2007-2008 would be dated thus, 2nd session, 39th Parliament, 56-57 Elizabeth II, 2007-2008. The Zoroastrian calendar also operated with Regnal Years following the reform of Ardashur I. 3rd century. While not strictly the Regnal Year, time in the United States of America can be derived from the Declaration of Independence July 4, 1776. For example, the U.S. Constitution is dated assigned in the year of our Lord 1,700 and 87 and of the Independence of the United States of America the 12th, and presidential proclamations will often be ended in witness where I have hereon to set my hand. The ordinal day of month, in the year of our Lord year, banned of the Independence of the United States of America the year. 2018 is the 243rd year of the Independence of the United States of America on and after July 4 of that year. Time is also sometimes reckoned in terms and sessions, if necessary of Congress, e.g. House of Representatives built two of the 112th Congresses dated 112th Congress, first session.