Additionally, private calendars based on the Senmyoreki were independently published in various parts of the country and some of these calendars indicated different dates; in result, Japan needed to unify these prevalent calendars all over the country and to make a calendrical reform.
また、各地で独自に宣明暦に基づいた暦（民間暦）が発行され、それらの中には日付にずれが生じているものもあり、暦の全国統一をする必要があった。