XML in a Nutshell, 3rd Edition

Name

xs:gDay

Synopsis

The xs:gDay type represents a certain day of the month such as the 14th or the 23rd in no particular month. The format used is —- DD plus an optional time zone suffix in the form hh:mm or Z to indicate Coordinated Universal Time (UTC). These are all valid xs:gDay values:

• ---01

• ---28

• ---29Z

• ---31+02:00

• ---15-11:00

The g indicates that the day is given in the Gregorian calendar. Schema date types are not localizable to non-Gregorian calendars. If you need a different calendar, you’ll need to derive from xs:string using the pattern facet.

Constraining facets that apply to xs:gDay are minInclusive, maxInclusive, minExclusive, maxExclusive, pattern, enumeration, and whiteSpace. However, if the time zones are not specified, it may not be possible to conclusively determine whether one day is greater than or less than another. If time zones are specified, days are compared by when they start. Thus ---29-05:00 is greater than ---29Z, which is greater than ---29+02:00.