Japanese calendar

Japanese calendar types have included several of official and unofficial systems. At present, Japan uses the Gregorian calendar and also the Japanese era name system. 
History.
Japan has more than one traditional system for counting years, including
Since the Meiji period, Japan has used the system.
In Japan today, the old Chinese calendar is rarely used. The system of counting years from the reign of Emperor Jimmu has been abandoned.
Annual holidays in Japan's calendar.
The Japanese calendar has yearly holidays and traditional events. Some of these preserve ancient customs.
The names and dates of some of Japan's national holidays have changed over time.