Columbia subject headings:
Chronologies.
Japan--Social life and customs--1945---Chronology.
Harvard subject headings:
Japan--Social life and customs--20th century--Chronology.
Japan--Social life and customs--21st century--Chronology.
Princeton subject headings:
Japan--Social life and customs--20th century--Chronology.
Japan--Social life and customs--21st century--Chronology.