However, the leader was often given a more complex formal posthumous name as well.
Era names were used for over two millennia by Chinese emperors and are still used in North Korea, Japan and Taiwan.It could last from one year to the length of the leader's reign.The Lanfang Republic era, Republic of Formosa era and Republic of China era are era names without an emperor.The Confucius era and Juche era are based on the year of birth of the thinker or eternal president.So, for example, a bill passed in the second session during the period spanning 2007–2008 would be dated thus: Second Session, Thirty-ninth Parliament, 56–57 Elizabeth II, 2007–2008 The Zoroastrian calendar also operated with regnal years following the reform of Ardashir I (3rd century). Constitution is dated as signed in "the Year of our Lord one thousand seven hundred and Eighty seven and of the Independence of the United States of America the Twelfth," and Presidential proclamations will often be ended "IN WITNESS WHEREOF, I have hereunto set my hand this [ordinal] day of [month], in the year of our Lord [year], and 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.
While not strictly a regnal year, time in the United States of America can be derived from the Declaration of Independence (July 4, 1776). Time is also sometimes reckoned in terms (and sessions, if necessary) of Congress; e.g.Regnal years are "finite era names", contrary to "infinite era names" such as Christian era, Jimmu era, Juche era, and so on.In ancient times, calendars were counted in terms of the number of years of the reign of the current monarch.If it lasted more than one year, numbers were appended to the era name.If it lasted the entire length of the leader's reign, then that leader is often referred to by that name posthumously.Reckoning long periods of times required a king list.