commemoration, celebration, remembrance...

century, era, of the century (e.g. fight of the century)

order, observance, discipline...

era, CE (Common Era), AD (Anno Domini)

traveller's journal, traveler's journal, travelogue

pre-era, BC, BCE

Devonian period

period, Nihon Shoki (second oldest work of Japanese history, compiled in 720 CE)...

end of a century (esp. 19th), fin-de-siècle, end of the world (esp. in fiction)...

law and order, (official) discipline

public morals, discipline, rules governing social behavior

last century, previous century, ancient times...

Cretaceous Period

bulletin, memoirs

biography

years (since the start of an era)

Kii (former province located in present-day Wakayama and southern Mie prefectures)

military discipline, military regulations, military rules

school discipline

Imperial era, system of counting years from the start of Emperor Jimmu's reign in 660 BCE

enforcement of official discipline, tightening of discipline, eliminating corruption among government officials

age of a young lady who is at the peak of her (sexual) attractiveness, marriageable age (of a young lady), sweet sixteen

Christian era

party discipline

rules which officials must follow

true account, authentic record, history

the Kojiki and Nihon Shoki (earliest historical records of Japan)

Nihon Shoki (second oldest work of Japanese history, compiled in 720 CE), Nihongi...

Shoku Nihongi (second of the six classical Japanese history texts)

year, years, period...