Numeric, two-digit value of the day of the month.
Used in both book metadata and within bibliographic references (<element-citation> and <mixed-citation>).
Related Essay: For a discussion on the use of <day>, see Dates in Citations.
<!ELEMENT day (#PCDATA) >
Text, numbers, or special characters
<conf-date>, <date>, <date-in-citation>, <element-citation>, <mixed-citation>, <product>, <pub-date>, <related-article>, <related-object>, <std>, <string-date>
In metadata to record a lifecycle (<pub-history>) date:
...
<book-part-meta>
...
<contrib-group>
<contrib contrib-type="author">
<collab collab-type="committee">Technical Committee ISO/TC 108,
Subcommittee SC 2</collab>
</contrib>
</contrib-group>
<fpage seq="1">1</fpage>
<lpage>23</lpage>
<pub-history>
<date date-type="approved">
<day>01</day>
<month>06</month>
<year>2012</year>
</date>
</pub-history>
...
</book-part-meta>
...
In metadata, in both publication date and publication history dates:
...
<book-meta>
...
<pub-date date-type="publication"
publication-format="electronic"
iso-8601-date="1998-09-17">
<day>17</day><month>09</month><year>1998</year>
</pub-date>
<pub-date date-type="publication"
publication-format="print"
iso-8601-date="1998-11-09">
<year>1998</year>
</pub-date>
<pub-history>
<date date-type="received"
publication-format="manuscript"
iso-8601-date="1998-01-05">
<day>05</day><month>01</month><year>1998</year>
</date>
<date date-type="rev-request"
iso-8601-date="1998-03-14">
<day>14</day><month>03</month><year>1998</year>
</date>
<date date-type="rev-received"
iso-8601-date="1998-05-24">
<day>24</day><month>05</month><year>1998</year>
</date>
<date date-type="accepted"
iso-8601-date="1998-06-06">
<day>06</day><month>06</month><year>1998</year>
</date>
</pub-history>
...
</book-meta>
...
In an element-style bibliographic reference (punctuation and spacing removed):
...
<ref>
<element-citation publication-type="book" publication-format="web">
<source>Fact sheet: AIDS information resources</source>
<comment>[Internet]</comment>
<publisher-loc>Bethesda (MD)</publisher-loc>
<publisher-name>National Library of Medicine
(US)</publisher-name>
<year iso-8601-date="2003-05-02">2003</year>
<month>May</month>
<day>2</day>
<date-in-citation content-type="updated"
iso-8601-date="2005-07-14">updated 2005 Jul 14</date-in-citation>
<date-in-citation content-type="access-date"
iso-8601-date="2006-11-15">cited 2006 Nov 15</date-in-citation>
<size units="screens">[about 3 screens]</size>
<comment>Available from:
<uri>http://www.nlm.nih.gov/pubs/factsheets/aidsinfs.html</uri>
</comment>
</element-citation>
</ref>
...
In a mixed-style bibliographic reference (punctuation and spacing preserved):
...
<ref>
<mixed-citation publication-type="book" publication-format="web">
<source>Fact sheet: AIDS information resources</source>
[Internet]. <publisher-loc>Bethesda
(MD)</publisher-loc>: <publisher-name>National
Library of Medicine (US)</publisher-name>;
<year iso-8601-date="2003-05-02">2003</year> <month>May</month>
<day>2</day> [updated <date-in-citation content-type="updated"
iso-8601-date="2005-07-14">2005 Jul 14</date-in-citation>; cited
<date-in-citation content-type="access-date"
iso-8601-date="2006-11-15">2006 Nov 15</date-in-citation>].
<size units="screens">[about 3 screens]</size>.
Available from:
<uri>http://www.nlm.nih.gov/pubs/factsheets/aidsinfs.html</uri>.
</mixed-citation>
</ref>
...