RFC 9253 · PROPOSED STANDARD · 2022
SUN · 14 JUN 2026
Support for iCalendar Relationships
Overview
RFC 9253, “Support for iCalendar Relationships”, is a Proposed Standard document published in August 2022 by M. Douglass. It updates RFC 5545. The canonical text is published by the RFC Editor.
Abstract
This specification updates the iCalendar RELATED-TO property defined in RFC 5545 by adding new relation types and introduces new iCalendar properties (LINK, CONCEPT, and REFID) to allow better linking and grouping of iCalendar components and related data.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 9253 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
Relationships to other RFCs
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