RFC 7953 · PROPOSED STANDARD · 2016

Calendar Availability

Overview

RFC 7953, “Calendar Availability”, is a Proposed Standard document published in August 2016 by C. Daboo, M. Douglass. It updates RFC 4791, RFC 5545, RFC 6638. The canonical text is published by the RFC Editor.

Abstract

This document specifies a new iCalendar (RFC 5545) component that allows the publication of available and unavailable time periods associated with a calendar user. This component can be used in standard iCalendar free-busy lookups, including the iCalendar Transport-independent Interoperability Protocol (iTIP; RFC 5546) free-busy requests, to generate repeating blocks of available or busy time with exceptions as needed.

This document also defines extensions to the Calendaring Extensions to WebDAV (CalDAV) calendar access protocol (RFC 4791) and the associated scheduling protocol (RFC 6638) to specify how this new calendar component can be used when evaluating free-busy time.

Abstract as published in the RFC, via rfc-editor.org.

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 7953 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC updates
RFC 4791 RFC 5545 RFC 6638
Other RFCs from 2016

Who Is Online

In total there are 191 users online: 0 registered, 182 guests and 9 bots.

Most users ever online was 5,555 on 17 Jul 2026, 3:23 am.

Bots: AhrefsBot Applebot Baiduspider Bingbot Googlebot Other Bot Other Crawler PetalBot SemrushBot

Users active in the past 15 minutes. Total registered members: 372