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mods:dateIssued
: The date the resource was published, released or
issued.mods:dateCreated
: The date of creation of the resource.mods:copyrightDate
: The date on which a resource is copyrighted.mods:dateOther
: A date not falling into another category which is
important to record. In this case, mods:dateOther/@type
is required and
the value should be taken use from the authorized list of typesThe following attributes apply to all 4 of these date elements. If a date cannot be
displayed properly using a date element with attributes, include a
mods:dateOther
element with no attributes for the desired display form,
and, in addition, encode the date as best as possible using the closest matching pattern
described below.
Use of these attributes is a little confusing, and it may be easier to look for a pattern that matches the date you wish to record in the examples below.
/@encoding
[Required if Applicable] Encoding is only used when it is possible to code a date in w3cdtf format (YYYY-MM-DD). The format can be abbreviated to YYYY or YYYY-MM.
/@point
Point is used when we need to express a date range. The two values used are "start" and "end".
/@keyDate
[Required] One of the date elements must have a keyDate. The value is always "yes". keyDate designates which date will be sorted on. It is not repeatable.
/@qualifier
[Required if Applicable] The three values for qualifier are "approximate", "inferred", and "questionable". In AACR2 terms, approximate is equivalent to "ca.", inferred is equivalent to brackets, and questionable is equivalent to ?
Additionally, the type
attribute may be used on mods:dateOther
to indiciate other types of dates not covered by mods:dateIssued
,
mods:dateCreated
, and mods:copyrightDate
. If the type
attribute is not present, the content of
the mods:dateOther
element is assumed to be a display form of the date,
and, as such, none of the other date elements will display.
mods:dateOther/@type
[Required if Applicable] At present there are two supported values:
phonograph
Generates a "p" in front of the date
hijri
Indicates the date is relative to the Hijri calendar. In this case, a
mods:dateOther[@type = 'hijri']
with the Hijri date
encoded, a mods:dateOther
without a type attribute for the
display form, and an "XXXX or YYYY" formated pair of
dates that map the date to the Gregorian calendar shoudl be
included.
postmark
Generates the label "Postmark date:" and displays separate from the other origin information.
The following examples illustrate the display behavior for various permutations of the
attributes explained above. mods:dateIssued
and
mods:dateCreated
behave exactly the same and are therefore
interchangeable in the examples below. mods:copyrightDate
and
mods:dateOther
have different, generally less complex behaviors.
<dateCreated encoding="w3cdtf" keyDate="yes">1975</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" point="start">1930</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" point="end">1930</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred">1930</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred" point="start">1930</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred" point="end">1930</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable">1930</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable" point="start">1930</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable" point="end">1930</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="approximate">1979</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="approximate" point="start">1979</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="approximate" point="end">1979</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred">1930</dateCreated> <dateCreated encoding="w3cdtf" qualifier="inferred">1939</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred" point="start">1930</dateCreated> <dateCreated encoding="w3cdtf" qualifier="inferred" point="start">1939</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred" point="end">1930</dateCreated> <dateCreated encoding="w3cdtf" qualifier="inferred" point="end">1939</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable">1930</dateCreated> <dateCreated encoding="w3cdtf" qualifier="questionable">1939</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable" point="start">1930</dateCreated> <dateCreated encoding="w3cdtf" qualifier="questionable" point="start">1939</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable" point="end">1930</dateCreated> <dateCreated encoding="w3cdtf" qualifier="questionable" point="end">1939</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred">1900</dateCreated> <dateCreated encoding="w3cdtf" qualifier="inferred">1999</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred" point="start">1900</dateCreated> <dateCreated encoding="w3cdtf" qualifier="inferred" point="start">1999</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred" point="end">1900</dateCreated> <dateCreated encoding="w3cdtf" qualifier="inferred" point="end">1999</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable">1900</dateCreated> <dateCreated encoding="w3cdtf" qualifier="questionable">1999</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable" point="start">1900</dateCreated> <dateCreated encoding="w3cdtf" qualifier="questionable" point="start">1999</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable" point="end">1900</dateCreated> <dateCreated encoding="w3cdtf" qualifier="questionable" point="end">1999</dateCreated>
<copyrightDate encoding="w3cdtf" keyDate="yes">1992</copyrightDate>
<dateOther type="phonograph" keyDate="yes" encoding="w3cdtf">1992</dateOther>
<dateCreated encoding="w3cdtf" keyDate="yes">1967</dateCreated> <copyrightDate encoding="w3cdtf">1992</copyrightDate>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred">1981</dateCreated> <dateOther type="phonograph" keyDate="yes" encoding="w3cdtf">1975</dateOther>
<dateCreated encoding="w3cdtf" keyDate="yes" point="start">1930</dateCreated> <dateCreated encoding="w3cdtf" point="end">1979</dateCreated>
<dateCreated encoding="w3cdtf" point="start" qualifier="inferred">1930</dateCreated> <dateCreated encoding="w3cdtf" keyDate="yes" point="end">1979</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" point="start">1930</dateCreated> <dateCreated encoding="w3cdtf" point="end" qualifier="inferred">1979</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" point="start" qualifier="inferred">1930</dateCreated> <dateCreated encoding="w3cdtf" point="end" qualifier="inferred">1979</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" point="start" qualifier="questionable">1900</dateCreated> <dateCreated encoding="w3cdtf" point="end" qualifier="questionable">1939</dateCreated>
<dateCreated encoding="w3cdtf" point="start" qualifier="questionable">1900</dateCreated> <dateCreated encoding="w3cdtf" keyDate="yes" point="end">1999</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" point="start">1900</dateCreated> <dateCreated encoding="w3cdtf" point="end" qualifier="questionable">1999</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" point="start" qualifier="approximate">1901</dateCreated> <dateCreated encoding="w3cdtf" point="end" qualifier="approximate">2000</dateCreated>
<dateCreated encoding="w3cdtf" point="start" qualifier="approximate">1900</dateCreated> <dateCreated encoding="w3cdtf" keyDate="yes" point="end">1999</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" point="start">1900</dateCreated> <dateCreated encoding="w3cdtf" point="end" qualifier="approximate">1999</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="approximate">1930</dateCreated> <dateCreated encoding="w3cdtf" qualifier="approximate">1949</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="questionable">1930</dateCreated> <dateCreated encoding="w3cdtf" qualifier="questionable">1949</dateCreated>
<dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred">1992</dateCreated> <dateCreated encoding="w3cdtf" qualifier="inferred">1993</dateCreated>
<dateOther>1967 printing</dateOther> <dateCreated encoding="w3cdtf" keyDate="yes">1975</dateCreated>
<dateOther>1697 [i.e. 1967]</dateOther> <dateCreated encoding="w3cdtf" keyDate="yes">1967</dateCreated>
<dateOther>1963 [i.e. 1971]</dateOther> <dateCreated encoding="w3cdtf" keyDate="yes">1971</dateCreated>
<dateOther>between 17--? and 19--?</dateOther> <dateCreated encoding="w3cdtf" keyDate="yes" point="start">1700</dateCreated> <dateCreated encoding="w3cdtf" point="end">1999</dateCreated>
<dateOther>5730 [1969 or 1970]</dateOther> <dateOther type="hijri">5730</dateOther> <dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred">1969</dateCreated> <dateCreated encoding="w3cdtf" qualifier="inferred">1970</dateCreated>
<dateOther>4308 [1975]</dateOther> <dateOther type="hijri">4308</dateOther> <dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred">1975</dateCreated>
<dateOther>[4308 i.e. 1975]</dateOther> <dateOther type="hijri">4308</dateOther> <dateCreated encoding="w3cdtf" keyDate="yes" qualifier="inferred">1975</dateCreated>
<dateOther>anno 18 [1939]</dateOther> <dateCreated encoding="w3cdtf" keyDate="yes">1939</dateCreated>