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Public-images-osm logo.svg opening_date
Gdansk Hilton Hotel under construction february 2010 d.jpg
Expected date of some event - read wiki for precautions. Use YYYY-MM-DD format. Edit this description in the wiki page. Edit this description in the data item.
Group: Properties
Used on these elements
may be used on nodesmay be used on waysmay be used on areasmay be used on relations
Useful combination
Status: in use


An approximated date in the future when a construction will be finished, used for example on landuse=construction and highway=construction. It is recommended to additionally add check_date=*, which describes the date in the past, when the value of opening_date=* was actually checked.

Format: YYYY-MM-DD (ISO 8601 format)

Avoid combinations such as building=yes + opening_date=future as this would break lots of existing software (see trolltags). This can be avoided by using a lifecycle prefix like construction:building=yes or the specific methods established for roads and railways.

Example: opening_date=2018-11-10 - 10 November 2018

Practical use

Opening dates in the past should be resurveyed as either construction completed or opening date changed:

See also