RELAX NG by Eric van der Vlist will be published by O'Reilly & Associates (ISBN: 0596004214)
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xsd:dateTime — Instant of time (Gregorian calendar).
xsd:anySimpleType
xsd:dateTime
none
enumeration, maxExclusive, maxInclusive, minExclusive, minInclusive, pattern.
<xsd:simpleType name="dateTime" id="dateTime">
<xsd:restriction base="xsd:anySimpleType">
<xsd:whiteSpace value="collapse" fixed="true"/>
</xsd:restriction>
</xsd:simpleType>
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This datatype describes instances identified by the combination of a date and a time. Its value space is described as a "combination of date and time of day" in Chapter 5.4 of ISO 8601. Its lexical space is the extended format "[-]CCYY-MM-DDThh:mm:ss[Z|(+|-)hh:mm]". The timezone may be specified as "Z" (UTC) or "(+|-)hh:mm." Timezones that are not specified are considered undetermined.
The basic format of ISO 8601 calendar datetimes, "CCYYMMDDThhmmss" is not supported.
The other forms of datetimes available in ISO 8601 — ordinal dates defined by the year, the number of the day in the year, dates identified by calendar week, and day numbers — are not supported.
As the value space is defined by reference to ISO 8601, there is no support for any calendar system other than Gregorian.
As the lexical space is also defined in reference to ISO 8601, there is no support for any localization such as different orders for date parts or named months.
The order relation between datetimes with and without timezone is partial: they can be compared only outside of a +/- 14 hours interval.
Valid values for xsd:dateTime include: "2001-10-26T21:32:52", "2001-10-26T21:32:52+02:00", "2001-10-26T19:32:52Z", "2001-10-26T19:32:52+00:00", "-2001-10-26T21:32:52", or "2001-10-26T21:32:52.12679".
The following values would be invalid: "2001-10-26" (all the parts must be specified), "2001-10-26T21:32" (all the parts must be specified), "2001-10-26T25:32:52+02:00" (the hours part (25) is out of range), or "01-10-26T21:32" (all the parts must be specified).
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All text is copyright Eric van der Vlist, Dyomedea. During development, I give permission for non-commercial copying for educational and review purposes. After publication, all text will be released under the Free Software Foundation GFDL.