Name of the calendar used in naming a date such as a publication date, for example, “Gregorian”, “Japanese” (Emperor years), or “Thai Buddha”.
In this Tag Set, many of the date elements, such as <pub-date> and <year>, may take a @calendar attribute to indicate the calendar in which the date is given. For example, a calendar might be named as:
Here is an example of a year and calendar in Pinyin:
Neither a date nor a calendar need be stated in English. The element that holds the @calendar attribute may also take an @xml:lang attribute to name the language or script of the element content. For example, here is a year from the traditional Chinese calendar, in which both the @calendar and the year itself are given in Chinese:
<year xml:lang="zh" calendar="農曆">癸巳</year>
Used on these Elements:
|Text, numbers, or special characters||Name of the calendar used in the date, for example, “Gregorian”.|
|Restriction||@calendar is an optional attribute; there is no default.|
... <date date-type="received" calendar="Japanese" iso-8601-date="2013-07-01"><day>1</day> <month>7</month> <year>25</year><era>昭和</era> </date> ...