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calendar calendar

Name of the calendar used in naming a date such as a publication date, for example, “Gregorian”, “Japanese” (Emperor years), or “Thai Buddha”.
OPTIONAL on many elements; click for list and usage

<access-date>, <conf-date>, <date>, <date-in-citation>, <pub-date>, <year>

Value Meaning
Text, numbers, or special characters Name of the calendar used in the date, for example, “Gregorian”, “Japanese”, or “Chinese”.
Restriction This is an optional attribute; there is no default.