#### 8.4.2.7 IfcTime

The IfcTime identifies a time within a day, expressed by hours, minutes and second. It is expressed by a string value following a particular lexical representation.

The lexical representation for IfcTime is: hh:mm:ss where where hh represents hours, mm minutes and ss seconds. Additional digits can be used to increase the precision of fractional seconds if desired i.e the format ss.ss... A time zone indicator may be provided by a representation of the different to the Coordinated Universal Time. It is appended with a sign [+/-] followed by hh and optionally :mm.

> EXAMPLE 13:20:00-05:00 represents 1:20 pm for a time zone which is 5 hours behind Coordinated Universal Time (such as Eastern Standard Time)

> NOTE See extended format representation of time as defined in ISO 8601. The restrictions defined in XML Schema Part 2 apply.

> HISTORY New type in IFC4.

XSD Specification:

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

EXPRESS Specification:

TYPE IfcTime = STRING;
END_TYPE;

EXPRESS-G diagram

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