Korean era names were used during the period of Silla, Goguryeo, Balhae, Taebong, Goryeo, Joseon, and the Korean Empire. Dangun-giwon, the era name originating from the foundation of Gojoseon is also widely used in Korea as an indication of long civilisation of Korea.

All these era names were used during the reign of King Gung-ye, who ruled Taebong from 901 to 918.

Some Chinese era names were adopted, especially in the Joseon dynasty due to the Korean Confucian ideology. During Colonial Korea, Imperial Japan enforced its own era system version for colonial Korea.

The North Korean government and associated organizations use a variation of the Gregorian calendar with a Juche year based on April 15, 1912 CE, the date of birth of Kim Il-sung, as year 1. There is no Juche year 0. The calendar was introduced in 1997. Months are unchanged from those in the standard Gregorian calendar. In many instances, the Juche year is given after the CE year, for example, 27 June 2007 Juche 96. But in North Korean publications, the Juche year is usually placed before the corresponding CE year, as in Juche 96 (2007).

A regnal name, or reign name, is a formal name used by some monarchs and popes during their reigns. Since medieval times, monarchs have frequently chosen to use a name different from their own personal name when they inherit a throne.

The new name (or sometimes the old one, confirmed) is followed by an ordinal to give a unique name for the period when the monarch is on the throne. However, in the case of a personal union, the same ruler may carry different ordinals in each state, as they are each assigned chronologically; but some may have more (or less) precursors of the same Christian name (usually from a different dynasty).

In parts of Asia, monarchs take era names. Even where that is not the case, individual rulers (often long-lived ones) — instead of a whole dynasty, as is the case with Georgian, referring to several Georges of the Hanoverian dynasty — may become eponymous of their age or the zeitgeist of an epoch. Examples include (from the United Kingdom) Victorian (even applied to the rest of the world) or Edwardian.

Jay Chou; (born 18 January 1979) is a Taiwanese musician, singer-songwriter, music and film producer, actor and director. In 1998 he was discovered in a talent contest where he displayed his piano and song-writing skills. Over the next two years, he was hired to compose for popular Mandarin singers. Although he was trained in classical music, Chou combines Chinese and Western music styles to produce songs that fuse R&B, rock and pop genres. He composes all his own songs, as well as songs for other singers.

In 2000, Chou released his first album, titled Jay, under the record company Alfa Music. Since then he has released one album per year except in 2009, selling several million copies each. His music has gained recognition throughout Asia, most notably in regions such as Taiwan, China, Hong Kong, Japan, Malaysia, Indonesia, India, Singapore, Thailand, Vietnam and in overseas Asian communities. He has sold more than 28 million albums worldwide up to 2010. He debuted his acting career in Initial D (2005), for which he won Best Newcomer Actor in both the Hong Kong Film Awards and the Golden Horse Awards, and was nominated for Best Supporting Actor by Hong Kong Film Awards for his role in Curse of the Golden Flower (2006). He produced the theme song for the film Ocean Heaven starring Jet Li. His career now extends into directing and running his own record company JVR Music.