The calendar borrows elements from two historical calendars used in
Korea, the traditional system of
Korean era names and the
Gregorian calendar in which years are tied to the birth of
Jesus. In contrast to these two, the Juche calendar begins with the birth of the leader,
The decree on the Juche calendar was adopted on 8 July 1997, on the third anniversary of the
death of Kim Il-sung. The same decree also designated the birth anniversary of Kim Il-sung as the
Day of the Sun. The birth year of Kim Il-sung, 1912 in the Gregorian calendar, became "Juche 1" in the North Korean calendar.
 Thus, the year 2011 is "Juche 100", and so on.
The calendar began to be implemented on 9 September 1997, the
Day of the Foundation of the Republic.
 On that date, newspapers, news agencies, radio stations, public transport, and birth certificates began to use Juche years.