---
id: "yearmonth_roc"
kind: "pattern"
status: "draft"
is_pii: false
categories: ["datetime"]
country: ["TW"]
langs: ["zh"]
quality: 80
url: "https://registry.apicrafter.io/datatype/yearmonth_roc"
---

# Year and month in the ROC (Minguo) calendar (`yearmonth_roc`)

> **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 of the Republic of China (Minguo) calendar written as the ROC year and the month without separators (YYYMM), as in 10506 for June 2016. The ROC year is the Gregorian year minus 1911.

- Pattern of: `yearmonth`
- Personal data (PII): no
- Categories: Date and time (datetime)
- Countries: Taiwan (TW)
- Languages: Chinese (zh)

## Detection

Regular expression (Python `re`):

```
^[01]?\d{2}(?:0[1-9]|1[0-2])$
```

## Examples

- `10506` — June 2016
- `11412` — December 2025
- `10513` (invalid example) — Month 13

## Translations

- zh: 民國年月

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/Minguo_calendar>

## Quality

Score 80/100. Missing: mapping (Wikidata, Schema.org, ...), detector coverage.

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