Date in a Japanese era (wareki)
ID date_jp_era
Pattern of dateNot PIIDraft
This record is a draft: it has not been reviewed yet and may be incomplete or wrong. Do not rely on it for compliance decisions. Help improve it (see CONTRIBUTING.md).
Calendar date written with a Japanese era name (gengō) and the year of that era, for example 令和7年7月20日 or the abbreviated form 平成 9. 4.27. 元 stands for the first year of an era. The eras of modern dates are 明治 (from 1868), 大正 (1912), 昭和 (1926), 平成 (1989) and 令和 (2019); the Gregorian year is the start year of the era plus the era year minus one.
- Pattern of
- Date
date - Categories
- Date and time
- Countries
- Japan
- Languages
- Japanese
- Quality
- 80/100 · missing: mapping (Wikidata, Schema.org, ...), detector coverage
- Metacrafter rules
- no detection rule yet
- Supported by tools
- no tool record lists this type yet
Regular expression
^(?:明治|大正|昭和|平成|令和)\s*(?:元|[0-9０-９]{1,2})[年.．]\s*[0-9０-９]{1,2}[月.．]\s*[0-9０-９]{1,2}日?$Python re syntax.
Examples
| Value | Description |
|---|---|
| 平成 9. 4.27 | 27 April 1997, as in a municipal election table |
| 令和7.7.20 | 20 July 2025 |
| 令和元年5月1日 | 1 May 2019, the first day of Reiwa |
| 2019年5月1日 invalid | Gregorian year |
Translations
| Language | Name | Description |
|---|---|---|
| Japanese | 和暦の日付 |
Sources
Use this record
- Page URL:
https://registry.apicrafter.io/datatype/date_jp_era - JSON: API v1 · legacy shape (used by metacrafter) · Markdown (for LLMs)
- Improve it: edit
data/datatypes/JP/datetime/date_jp_era.yamlon GitHub