Seijinshiki
On Seijinshiki ("Coming-of-Age Day"), held the second Monday in January, men and women who turn twenty during the current academic year are ceremonially proclaimed legal adults. Nowadays, Seijinshiki is mostly an excuse for politicians to pontificate, women to dress up in lavish kimono, and everybody to party. The tradition originated with the kazoedoshi system, according to which a child was counted one year old at birth, and then a year older every January.

A-kan-beh
Acronym guide
An (ahn)
Christmas cake
Geta
Happi coat
Kansai-ben
Kobe
Koseki
Home literature
Meiji Period
Mikoshi
Pat Morita
Mutual
Nakamozu
Natsume Soseki
Obi
Okuribi
O-furo
Osaka
Sada Masashi
Sendai
Shiromuku uchikake
Tanzaku
Tatami
Terms of address
Tsuno-kakushi
Yukata

A useful compendium of Mormon ecclesiastical and theological terminology can be found here.