Japanese calendar types have included a range of official and unofficial systems. At present, Japan uses the Gregorian calendar, together with year designations stating the year of the reign of the current emperor.

The lunisolar Chinese calendar was introduced to Japan via Korea in the middle of the sixth century. 

After that, Japan calculated its calendar using various Chinese calendar procedures, and from 1685, using Japanese variations of the Chinese procedures. 

This includes also the celebrating of the Japanese deities which some originate from the Babylonian and Egyptian pagan ritual and practices.

Penis god celebrated by the Japanese inspiring time, a ritual which derives it’s roots from the worshiping of the Egyptian god called min god.

But in 1873, as part of Japan’s Meiji Period modernization, a calendar based on the solar Gregorian calendar was introduced.

In Japan today, the old Chinese calendar is virtually ignored; celebrations of the Lunar New Year are thus limited to Chinese and other Asian immigrant communities