An example of this is, that when the Yongle emperor usurped the thrown from his nephew he dated the year of his accession as "洪武三十五年", the 35th year of his father, the Hongwu Emperor's reign, i.e. Hongwu had in fact died in 1398, and the short reign of the Jianwen Emperor, who ruled between 13 was written out of the official record. The short lived Daxi kingdom, post Zhang Xianzhong, used the Ganzhi calendar without era names.

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Regnal year dating regnal year dating

The Confucius era and Juche era are based on the year of birth of the thinker or eternal president.

The Huangdi era, Dangun era and kōki were counted in terms of the number of years of the reign of the first monarch.

The Tibetan Empire, Kingdom of Khotan, Liao Dynasty, Western Xia, Jin dynasty (1115–1234), Kara-Khitan Khanate, Mongol Empire, Northern Yuan Dynasty, Qing Dynasty, Nguyễn Dynasty, Joseon Dynasty, Bogd Khaanate of Mongolia and North Korea also use non-Chinese era names.

Some are transliterations of their Chinese era names.

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.

During the later years of the Joseon Dynasty, years were also numbered from the founding of that dynasty in 1393.

From 1952 until 1961, years were numbered in Dangi in South Korea, counting from the legendary founding of Gojoseon in 2333 BC.

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]." year of the Independence of the United States of America.