暦こよみ改かい正せい

noun

calendar reform

Refers to the act or process of reforming a calendar system, such as the adoption of the Gregorian calendar.

• 日本にほんでは明めい治じ時じ代だいに暦こよみ改かい正せいが行おこなわれた。

  In Japan, a calendar reform was carried out in the Meiji period.