The traditional events such as Shichigosan Shichi-go-san (a day of prayer for the healthy growth of young children celebrated when they turn three, five, or seven years old) or Toshiiwai (the celebration for certain ages) (e.g. Koki (the cerebration of a person's seventieth birthday), Kiju (the cerebration of a person's seventy-seventh birthday), etc.) originally used the traditional Japanese age system.
伝統行事である七五三や年祝い（古希・喜寿など）も、本来、数え年で行われてきた。