att.datable

att.datable provides attributes for normalization of elements that contain dates, times, or datable events. [3.6.4 Dates and Times 13.4 Dates]
Module tei — The TEI Infrastructure
Members acquisition affiliation age altIdentifier application author binding birth bloc change climate conversion country creation custEvent date death district editor education event eventName faith floruit funder gender geogFeat geogName idno langKnowledge langKnown licence location meeting name nationality objectName occupation offset orgName origDate origPlace origin persName persPronouns placeName population precision principal provenance region relation residence resp seal settlement sex socecStatus sponsor stamp state terrain time title trait unitDecl unitDef
Attributes att.datable.w3c (@when, @notBefore, @notAfter, @from, @to) att.datable.iso (@when-iso, @notBefore-iso, @notAfter-iso, @from-iso, @to-iso) att.datable.custom (@when-custom, @notBefore-custom, @notAfter-custom, @from-custom, @to-custom, @datingPoint, @datingMethod)
calendar⚓︎ indicates one or more systems or calendars to which the date represented by the content of this element belongs.
Status Optional
Datatype 1–∞ occurrences of teidata.pointer separated by whitespace
Schematron

<sch:rule context="tei:*[@calendar]">
<sch:assert test="string-length( normalize-space(.) ) gt 0"> @calendar indicates one or more
systems or calendars to which the date represented by the content of this element belongs,
but this <sch:name/> element has no textual content.</sch:assert>
</sch:rule>
He was born on <date calendar="#gregorian">Feb. 22, 1732</date> (<date calendar="#julian" when="1732-02-22">Feb. 11, 1731/32,
O.S.</date>).
He was born on <date calendar="#gregorian #julian"
 when="1732-02-22">Feb. 22, 1732
(Feb. 11, 1731/32, O.S.)</date>.
Note

Note that the calendar attribute (unlike datingMethod defined in att.datable.custom) defines the calendar system of the date in the original material defined by the parent element, not the calendar to which the date is normalized.
period⚓︎ supplies pointers to one or more definitions of named periods of time (typically categorys or calendars) within which the datable item is understood to have occurred.
Status Optional
Datatype 1–∞ occurrences of teidata.pointer separated by whitespace
Note

This ‘superclass’ provides attributes that can be used to provide normalized values of temporal information. By default, the attributes from the att.datable.w3c class are provided. If the module for names & dates is loaded, this class also provides attributes from the att.datable.iso and att.datable.custom classes. In general, the possible values of attributes restricted to the W3C datatypes form a subset of those values available via the ISO 8601 standard. However, the greater expressiveness of the ISO datatypes may not be needed, and there exists much greater software support for the W3C datatypes.