provides attributes for indicating calendar systems to which a date belongs. assegna attributi per indicare i sistemi o calendari ai quali appartiene una data. indicates one or more systems or calendars to which the date represented by the content of this element belongs. 날짜 표현 시스템 또는 달력 표시 형식을 표시한다. 指明該日期表示所使用的曆法計算系統。この要素を含むコンテントにおける日付の暦やシステムを示す。 indique le système ou le calendrier auquel appartient la date exprimée dans le contenu de l'élément. indica el sistema o calendario en que se muestra una fecha. indica il sistema o calendario al quale la data appartiene. @calendar indicates one or more systems or calendars to which the date represented by the content of this element belongs, but this element has no textual content. He was born on Feb. 22, 1732 (Feb. 11, 1731/32, O.S.). He was born on Feb. 22, 1732 (Feb. 11, 1731/32, O.S.). Dienstag 7/19 Mai. L'année 1960 fut, en vertu du calendrier grégorien, bissextile ; le 22 juin tomba ainsi le jour de l'été, le 22 juin.

Note that the calendar attribute declares the calendar system used to interpret the textual content of an element, as it appears on an original source. It does not modify the interpretation of the normalization attributes provided by att.datable.w3c, att.datable.iso, or att.datable.custom. Attributes from those first two classes are always interpreted as Gregorian or proleptic Gregorian dates, as per the respective standards on which they are based. The calender system used to interpret the last (att.datable.custom) may be specified with datingMethod.

calendar属性は(att.datable.customクラスで定義されるdatingMethod属性と異なり、親要素によって定義される原資料の日付の暦日システムを定義するものであり、どの暦日に日付を正規化するかではない。