<complexType name="TimeCalendarEraType">
<annotation>
<documentation xml:lang="en">In every calendar, years are numbered relative to the date of a
reference event that defines a calendar era.
In this implementation, we omit the back-pointer "datingSystem".</documentation>
</annotation>
<complexContent>
<extension base="gml:DefinitionType">
<sequence>
<element name="referenceEvent" type="gml:StringOrRefType">
<annotation>
<documentation>Name or description of a mythical or historic event which fixes the position of the base scale of the calendar era.</documentation>
</annotation>
</element>
<element name="referenceDate" type="date" default="0001-01-01" minOccurs="0">
<annotation>
<documentation>Date of the referenceEvent expressed as a date in the given calendar.
In most calendars, this date is the origin (i.e., the first day) of the scale, but this is not always true.</documentation>
</annotation>
</element>
<element name="julianReference" type="decimal">
<annotation>
<documentation>Julian date that corresponds to the reference date.
The Julian day numbering system is a temporal coordinate system that has an
origin earlier than any known calendar,
at noon on 1 January 4713 BC in the Julian proleptic calendar.
The Julian day number is an integer value;
the Julian date is a decimal value that allows greater resolution.
Transforming calendar dates to and from Julian dates provides a
relatively simple basis for transforming dates from one calendar to another.</documentation>
</annotation>
</element>
<element name="epochOfUse" type="gml:TimePeriodPropertyType">
<annotation>
<documentation>Period for which the calendar era was used as a basis for dating.</documentation>
</annotation>
</element>
</sequence>
</extension>
</complexContent>
</complexType>
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XSD Schema Diagram:
