Project news

Invitation to comment on OData Extension for Temporal Data v4.0

First public review ends September 3rd

OASIS and the OASIS Open Data Protocol (OData) TC are pleased to announce that OData Extension for Temporal Data Version 4.0 is now available for public review and comment.

This specification defines how to represent and interact with time-dependent data using the Open Data Protocol (OData). It defines semantics and a representation for temporal data, including operations for querying and modifying temporal data along with vocabulary terms to annotate which data depends on time, and how.

The documents and related files are available here:

OData Extension for Temporal Data Version 4.0
Committee Specification Draft 01
29 July 2021

Editable source (Authoritative):

OData Temporal ABNF Construction Rules Version 4.0:
OData Temporal ABNF Test Cases:
OData Temporal Vocabulary:

For your convenience, OASIS provides a complete package of the specification document and any related files in a ZIP distribution file. You can download the ZIP file at:

How to Provide Feedback

OASIS and the OASIS Open Data Protocol (OData) TC value your feedback. We solicit input from developers, users and others, whether OASIS members or not, for the sake of improving the interoperability and quality of its technical work.

The public review starts 05 August 2021 at 00:00 UTC and ends 03 September 2021 at 23:59 UTC.

Comments may be submitted to the TC by any person through the use of the OASIS TC Comment Facility which can be used by following the instructions on the TC’s “Send A Comment” page (

Comments submitted by TC non-members for this work and for other work of this TC are publicly archived and can be viewed at:

All comments submitted to OASIS are subject to the OASIS Feedback License, which ensures that the feedback you provide carries the same obligations at least as the obligations of the TC members. In connection with this public review, we call your attention to the OASIS IPR Policy [1] applicable especially [2] to the work of this technical committee. All members of the TC should be familiar with this document, which may create obligations regarding the disclosure and availability of a member’s patent, copyright, trademark and license rights that read on an approved OASIS specification.

OASIS invites any persons who know of any such claims to disclose these if they may be essential to the implementation of the above specification, so that notice of them may be posted to the notice page for this TC’s work.

Additional information about this review and any previous public reviews is published with the specification documents at:

Additional information about the specification and the OData TC can be found at the TC’s public home page:

Additional references