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Adoption of the Gregorian Calendar
- When
- 1873
- Where
- National jurisdiction
Japan officially adopted the Gregorian calendar in 1873, replacing the lunisolar Chinese-based system as part of Meiji modernization efforts.
The Western Common Era system, based on the solar Gregorian calendar, was introduced in 1873. This reform replaced the previous lunisolar Chinese calendar, which began 3 to 7 weeks later. The change standardized official dating and aligned Japan with international norms, though traditional cultural elements remained.
Sources
- Japanese calendar Wikipedia, revision of 2026-09-18
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.