(date) contains a date in any format. [3.6.4. Dates and Times 2.2.4. Publication, Distribution, Licensing, etc. 2.6. The Revision Description 3.12.2.4. Imprint, Size of a Document, and Reprint Information 15.2.3. The Setting Description 13.4. Dates] supplies the value of the date or time in a standard form, e.g. yyyy-mm-dd. specifies the earliest possible date for the event in standard form, e.g. yyyy-mm-dd. specifies the latest possible date for the event in standard form, e.g. yyyy-mm-dd. indicates the starting point of the period in standard form, e.g. yyyy-mm-dd. indicates the ending point of the period in standard form, e.g. yyyy-mm-dd.