The numeric value of a day of the month, in two-digit form as it would be stated as the “DD” in the international date format YYYY-MM-DD, for example, “03”, “25”
Used in metadata for both book and book components (such as a chapter) and within bibliographic references (<citation>).
<!ELEMENT day (#PCDATA) >
Text, numbers, or special characters
... <book-part-meta> <title-group> <title>GenBank: The Nucleotide Sequence Database</title> </title-group> <contrib-group>...</contrib-group> <history> <date date-type="created"> <day>09</day><month>10</month><year>2002</year> </date> <date date-type="updated"> <day>27</day><month>07</month><year>2004</year> </date> </history> <alternate-form xmlns:xlink="http://www.w3.org/1999/xlink" alternate-form-type="pdf" xlink:href="ch1d1"/> <abstract> <p>The GenBank sequence database is an annotated collection of all publicly available nucleotide sequences and their protein translations. This database is produced ...</p> </abstract> </book-part-meta> ...