#### 8.2.2.1 IfcTimeStamp

IfcTimeStamp is an indication of date and time by measuring the number of seconds which have elapsed since 1 January 1970, 00:00:00 UTC.

Type: INTEGER

> NOTE Defined in IEEE Std 1003.1.

> HISTORY New type in IFC1.5.1.

XSD Specification:

<xs:simpleType name="IfcTimeStamp">
<xs:restriction base="xs:long"/>
</xs:simpleType>
<xs:element name="IfcTimeStamp-wrapper" nillable="true">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="ifc:IfcTimeStamp">
<xs:attributeGroup ref="ifc:instanceAttributes"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>

EXPRESS Specification:

TYPE IfcTimeStamp = INTEGER;
END_TYPE;

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