old lunisolar calendar; traditional Japanese calendar
Refers to the calendar system used in Japan before the adoption of the Gregorian calendar in 1873. Often contrasted with 新暦 (the new/solar calendar).
The New Year on the old calendar falls around February on the new calendar.
This festival is still held according to the old calendar.
The lunar New Year's date changes every year.
In China, the Lunar New Year is celebrated according to the old calendar.
According to the lunar calendar, today corresponds to August 1st.