att.datable.iso

att.datable.iso provides attributes for normalization of elements that contain datable events using the ISO 8601:2004 standard. [3.6.4 Dates and Times 13.4 Dates]
Module namesdates — Names, Dates, People, and Places
Members att.datable [acquisition affiliation age altIdentifier application author binding birth bloc change climate conversion country creation custEvent date death district editor education event 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
when-iso⚓︎ supplies the value of a date or time in a standard form.
Status Optional
Datatype teidata.temporal.iso

The following are examples of ISO date, time, and date & time formats that are not valid W3C format normalizations.

<date when-iso="1996-09-24T07:25+00">Sept. 24th, 1996 at 3:25 in the morning</date>
<date when-iso="1996-09-24T03:25-04">Sept. 24th, 1996 at 3:25 in the morning</date>
<time when-iso="1999-01-04T20:42-05">4 Jan 1999 at 8:42 pm</time>
<time when-iso="1999-W01-1T20,70-05">4 Jan 1999 at 8:42 pm</time>
<date when-iso="2006-05-18T10:03">a few minutes after ten in the morning on Thu 18 May</date>
<time when-iso="03:00">3 A.M.</time>
<time when-iso="14">around two</time>
<time when-iso="15,5">half past three</time>

All of the examples of the when attribute in the att.datable.w3c class are also valid with respect to this attribute.
He likes to be punctual. I said <q>
 <time when-iso="12">around noon</time>
</q>, and he showed up at <time when-iso="12:00:00">12 O'clock</time> on the dot.

The second occurence of time could have been encoded with the when attribute, as 12:00:00 is a valid time with respect to the W3C XML Schema Part 2: Datatypes Second Edition specification. The first occurence could not.
notBefore-iso⚓︎ specifies the earliest possible date for the event in standard form, e.g. yyyy-mm-dd.
Status Optional
Datatype teidata.temporal.iso
notAfter-iso⚓︎ specifies the latest possible date for the event in standard form, e.g. yyyy-mm-dd.
Status Optional
Datatype teidata.temporal.iso
from-iso⚓︎ indicates the starting point of the period in standard form.
Status Optional
Datatype teidata.temporal.iso
to-iso⚓︎ indicates the ending point of the period in standard form.
Status Optional
Datatype teidata.temporal.iso
Note

The value of these attributes should be a normalized representation of the date, time, or combined date & time intended, in any of the standard formats specified by ISO 8601:2004, using the Gregorian calendar.

If both when-iso and dur-iso are specified, the values should be interpreted as indicating a span of time by its starting time (or date) and duration. That is,
<date when-iso="2007-06-01" dur-iso="P8D"/>
indicates the same time period as
<date when-iso="2007-06-01/P8D"/>

In providing a ‘regularized’ form, no claim is made that the form in the source text is incorrect; the regularized form is simply that chosen as the main form for purposes of unifying variant forms under a single heading.