Dates in profile metadata
Capture single dates in metaDescribes with predicate="date" as an ISO 8601 date.
metaDescribes[@predicate="date"] metaItem[@about="date"][metaDescribes[@predicate="isoStart"] and metaDescribes[@predicate="isoEnd"]] metaDescribes[@predicate="period"]
Where the accuracy of a date is only given to the nearest year or month, capture as a 'partial' ISO 8601 date.
Where the accuracy of a date is expressed as a range, capture the date range using metaItem with about="date".
Where the date can not be placed in ISO 8601 format, because it is a description of an period of time, such as 'Pyramid Era' or 'Old Kingdom', capture as metaDescribes predicate='period'.
A date in a birth life event
<metaItem about="birth">
<metaDescribes predicate="date">1921-05-23</metaDescribes>
<metaItem about="place"><metaDescribes predicate="institution">St Christopher, Eton College</metaDescribes><metaDescribes predicate="town">Eton</metaDescribes><metaDescribes predicate="county">Buckinghamshire</metaDescribes><metaDescribes predicate="country">England</metaDescribes>
</metaItem>
</metaItem>
A partial date in a baptism life event
<metaItem about="baptism">
<metaDescribes predicate="date">1916-02</metaDescribes>
<metaItem about="place"><metaDescribes predicate="institution">St Catherine's Church</metaDescribes><metaDescribes predicate="town">Baglan</metaDescribes><metaDescribes predicate="county">Glamorgan</metaDescribes><metaDescribes predicate="country">Wales</metaDescribes>
</metaItem>
<metaDescribes predicate="source">widow, in letter to CR</metaDescribes>
<metaDescribes predicate="source">WW</metaDescribes>
</metaItem>
A single date with an accuracy range in a death life event
<metaItem about="death">
<metaDescribes predicate="date">2008-04-24</metaDescribes>
<metaItem about="place"><metaDescribes predicate="institution">Barnet General Hospital</metaDescribes><metaDescribes predicate="town">Barnet</metaDescribes><metaDescribes predicate="county">London</metaDescribes><metaDescribes predicate="country">England</metaDescribes>
</metaItem>
<metaDescribes predicate="source">d. cert.</metaDescribes>
<metaDescribes predicate="death_cause">disease or condition</metaDescribes>
<metaDescribes predicate="death_details">ischaemic gut, acute abdominal aortic aneurysm,
renal failure, atrial fibrillation</metaDescribes>
<metaItem about="wealth"><metaDescribes predicate="amount">£541,219, gross; £534,728, net</metaDescribes><metaDescribes predicate="descriptor">68 acres of land, a house, a
windmill</metaDescribes><metaDescribes predicate="action">resworn administration</metaDescribes><metaDescribes predicate="source">probate</metaDescribes><metaDescribes predicate="date">2001-06-07</metaDescribes><metaDescribes predicate="sourceAnnotation">CGPLA Eng. & Wales</metaDescribes>
</metaItem>
</metaItem>
A period of time - can't be captured as ISO 8601 date.
<metaItem about="burial">
<metaDescribes predicate="period">Old Kingdom</metaDescribes>
</metaItem>