Calendar date

The name that a calendar gives to a day.

Even for one calendar (such as the Gregorian). The date may take different forms. Eg.

 November 16, 2001
 11/16/2001   - has been used in places with American influence

 16 November 2001
 16/11/2001   - has been used in places with European influence

 2001 November 16
 2001-11-16   - the best format to use now.

The last of these is the ISO 8601 International standard form, agreed by over 100 countries.

Please refer to the [short list of the major users]. This format is unambiguous and should now be the default way of working everywhere.