s4watr:hasStartTimestamp — has start timestamp

IRI: https://saref.etsi.org/saref4watr/hasStartTimestamp
Is defined by: https://saref.etsi.org/saref4watr/v1.1.1/
https://saref.etsi.org/saref4watr/v2.1.1/
Is referenced by: https://saref.etsi.org/saref4watr/v1.1.1/
https://saref.etsi.org/saref4watr/v1.1.1/example/Tariff#
https://saref.etsi.org/saref4watr/v2.1.1/
https://saref.etsi.org/saref4watr/v2.1.1/example/Tariff#
License

Definition in SAREF4WATR v2.1.1 ontology document

s4watr:hasStartTimestamp — has start timestamp

canonical IRI: https://saref.etsi.org/saref4watr/v2.1.1/hasStartTimestamp
label: has start timestamp
definition: The start date and time of a tariff.

Definition as a Datatype Property

has domain: s4watr:Tariff
has range: xsd:dateTime

Definition in SAREF4WATR v1.1.1 ontology document

s4watr:hasStartTimestamp — has start timestamp

canonical IRI: https://saref.etsi.org/saref4watr/v1.1.1/hasStartTimestamp
label: has start timestamp
definition: The start date and time of a tariff.

Definition as a Datatype Property

has domain: s4watr:Tariff
has range: xsd:dateTime

SAREF is a European Norm! 2024-10

ETSI EN 303 760 provides guidance for developing IoT smart applications and products that are interoperable at the semantic level using the SAREF framework. It details how to apply SAREF, outlines a methodology to demonstrate compliance, and describes optional steps for contributing to a new SAREF extension.

ETSI EN 303 760: "SmartM2M; SAREF Guidelines for IoT Semantic Interoperability; Develop, apply and evolve Smart Applications ontologies".

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The SAREF website has been fully redesigned with a modern look, improved ontology browsing, and site-wide term-based search to enhance navigation and usability.

StandICT.eu 2026 grant: "Improving the ETSI TC SmartM2M SAREF publication framework and workflow"