---
id: "monthday_cjk"
kind: "pattern"
status: "draft"
is_pii: false
categories: ["datetime"]
langs: ["zh", "ja"]
quality: 93
url: "http://registry.apicrafter.io/datatype/monthday_cjk"
---

# Month and day with units (Chinese, Japanese) (`monthday_cjk`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Month and day without a year, written in Chinese or Japanese as numbers followed by the units for month (月) and day (日 or 号), for example 12月25日. A weekday may follow.

- Pattern of: `monthday`
- Personal data (PII): no
- Categories: Date and time (datetime)
- Countries: global
- Languages: Chinese (zh), Japanese (ja)

## Detection

Regular expression (Python `re`):

```
^[0-9０-９]{1,2}月[0-9０-９]{1,2}[日号](?: ?(?:[(（](?:星期[一二三四五六日天]|周[一二三四五六日天]|[月火水木金土日](?:曜日?)?)[)）]|星期[一二三四五六日天]|周[一二三四五六日天]|[月火水木金土日]曜日))?$
```

## Examples

- `12月25日` — 25 December
- `5月5日(木)` — 5 May, Thursday
- `2024年12月25日` (invalid example)

## Mappings

- qddate: `dt:date:date_cjk_noyear`

## Supported by tools

- `qddate`

## Translations

- ru: Месяц и день с единицами (китайский, японский): Месяц и день без года на китайском или японском языке, например 12月25日.

## Sources

- other: <https://github.com/ivbeg/qddate/blob/v1.1.0/qddate/patterns/cjk.py>

## Quality

Score 93/100. Missing: authoritative source link.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/monthday_cjk.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/datetime/monthday_cjk.yaml>