Description
Validate four digits for year, YYYY-MM with valid month for month, and a real YYYY-MM-DD for day; approximate and unknown retain arbitrary nonempty text.
Calendar coordinates depend on an era, origin, day-start rule, and sometimes an arithmetic rather than observational convention. A supplied coordinate difference does not resolve those choices.
Validate four digits for year, YYYY-MM with valid month for month, and a real YYYY-MM-DD for day; approximate and unknown retain arbitrary nonempty text.
When to use this tool
Use Ethnographic Date Precision Single Label when you need a documented calendar convention or source-coordinate comparison.
How to use the tool and how it works
- Enter dateText, precision. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read label. Use the output convention below.
Require nonempty dateText and a listed precision. Validate four digits for year, YYYY-MM with valid month for month, and a real YYYY-MM-DD for day; approximate and unknown retain arbitrary nonempty text.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| dateText | Supplied date text under the accepted precision and grammar above. | Required. Text; maximum UTF-16 length 8192. |
| precision | Recorded precision category; not a measurement-uncertainty estimate. | Required. Text; one of "year", "month", "day", "approximate", "unknown"; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| label | Formatted label for the supplied components under the convention above. | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"dateText": "2026-10",
"precision": "month"
},
"output": {
"label": "2026-10 [month]"
}
}Limitations and assumptions
- The tool preserves declared precision without interpreting uncertain dates, converting calendars, or estimating a dating interval.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Consult the source calendar and authoritative date information for actual observance, conversion, or historical dating.
References
Similar or alternative tools
- Historical Event Date Precision Token
Quote date text and append its declared precision.
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