Try out our new RRULE tool for creating RRULE compatible strings.

5.7. REFRESH-INTERVAL Property

Property Name

REFRESH-INTERVAL

Purpose

This property specifies a suggested minimum interval for polling for changes of the calendar data from the original source of that data.

Value Type

DURATION -- no default

Property Parameters

IANA and non-standard property parameters can be specified on this property.

Conformance

This property can be specified once in an iCalendar object.

Description

This property specifies a positive duration that gives a suggested minimum polling interval for checking for updates to the calendar data. The value of this property SHOULD be used by calendar user agents to limit the polling interval for calendar data updates to the minimum interval specified.

Format Definition

This property is defined by the following notation:

refresh = "REFRESH-INTERVAL" refreshparam ":" dur-value CRLF ;consisting of a positive duration of time.

refreshparam = *(
             ;
             ; The following is REQUIRED,
             ; but MUST NOT occur more than once.
             ;
             (";" "VALUE" "=" "DURATION") /
             ;
             ; The following is OPTIONAL,
             ; and MAY occur more than once.
             ;
             (";" other-param)
             ;
             )

Example

The following is an example of this property

 REFRESH-INTERVAL;VALUE=DURATION:P1W

This document was automatically converted to XHTML using an RFC to HTML converter with the original text document at the Internet Engineering Task Force web site at ietf.org .  The original text document should be referred to if there are any errors or discrepancies found in this document.

Need to test your iCalendar feeds?

The iCalendar Validator provides developers and testers a method to validate their iCalendar feeds, which can take data from either a URL, file or text snippet and compare it against the RFC 5545 specification.  We believe we have one of the best iCalendar validation tools available on the internet. More information about the validator can be found here.