In this Tag Set, many of the date elements, such as <conf-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:

• Arabic-Hijrah

• Chinese

• English-Hijrah

• Gregorian

• Japanese

• Korean

• Persian

• ROC-official

• Thai-Buddha

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: