|Date of last time the feature was surveyed|
|Used on these elements|
|Status: in use|
|Tools for this tag|
The key survey:date=* can be used to indicate the date when a node, way or relation was last surveyed or verified in person.
The date should be specified using the ISO 8601 standard. This standard specifies that date must follow the order year → month → day, separated by hyphen (-), such as 1990-12-24 for the 24th day of December in 1990 or 2022-02-02 for the 2nd day of February in 2022.
This key should only be used when providing the survey date would be of some value to the OSM community, for example if the survey date occured a reasonable amount of time in the past.
- start_date=* to indicate the date when the feature was physically founded or opened or when its construction officially finished
- source=* to indicate through which means the object's information was acquired (especially useful when the source's quality is uncertain)
- note=* to create a note to yourself and other mappers
- fixme=* to mark objects and places that need further attention