Key:historic:date
 historic:date
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| Description |
|---|
| Date when related event happened (memorials). Example formats: YYYY (year), YYYY-MM-DD (date), YYYY;YYYY (two years, combined with semicolon) YYYY..YYYY (time period, combined with two dots) |
| Group: properties |
| Used on these elements |
    |
| Useful combination |
| See also |
| Status: in use |
| Tools for this tag |
A key to indicate the date when the related event happened. Use in combination with historic=*.
For plaques, the event commemorated would have its date added with this key. To indicate when a plaque was installed, use start_date=*.
For the date when a feature was built or installed at its presented location, use construction_date=* or start_date=*.
Note: date=* is also suggested for this use, but its actual use is inconsistent and deprecating is debated.
Formatting
Example formats: YYYY (year), YYYY-MM-DD (date), YYYY;YYYY (two years, combined with semicolon) YYYY..YYYY (time period, combined with two dots)
Dates use the ISO 8601 system, which is based on the Gregorian calendar.
Caution: ISO8601 uses the format YYYY-MM-DD, not the North American model of MM-DD-YYYY
- Examples:
- 1910-03-31
- for where the full date is known, using the format YYYY-MM-DD
- 1910
- where the year is known, but no more
- 0897 (for 897 AD)
- 1848-07
- where the year and month are known
For centuries, use the C-notation.
- Example:
historic:date=C18- date in the 18th century (years 1701 to 1800)
To indicate a time period, use ".." between the beginning and the end.
- Example:
- 1910..1912
- years 1910 to 1912
To indicate several, separate dates, use ";" between the dates.
- Examples:
- 1901;1926
- year 1901 and year 1926
- 1910-01-01;1911-12-31
- for 1 January 1910 and 31 December 1911
Similar tags
start_date=*- Date when feature opened, the construction of the feature finished, or the feature was first at locationconstruction_date=*- Date when the construction of the feature finishedyear_of_construction=*- Year when the construction of the feature finished, year range when the construction took placeartwork:creation_year=*- Date when an artwork was createdsurvey:date=*- Date of last time the feature was surveyedcheck_date=*- Date when the feature was last surveyedsource:date=*