As a result of the Meiji Restoration, Japan adopted the Gregorian calendar in lieu of the Chinese lunar calendar in 1873. However, it took approximately until 1945, the end of World War II, for religious festivities to adopt the new calendar. In most Japanese temples, Buddha's birth is now celebrated on the Gregorian and buddhist calendar date April 8; only a few (mainly in Okinawa) celebrate it on the orthodox Chinese calendar date of the eighth day of the fourth lunar month.