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

iCalendar (RFC 5545)

Abstract

This document defines the iCalendar data format for representing and exchanging calendaring and scheduling information such as events, to-dos, journal entries, and free/busy information, independent of any particular calendar service or protocol.

RFC 5545 supercedes the original iCalendar specification , RFC 2445.

Author

B. Desruisseaux, Ed., Oracle, September 2009

Articles
Title
Abstract
Status of This Memo
Copyright and License Notice
1. Introduction
2. Basic Grammar and Conventions
2.1. Formatting Conventions
2.2. Related Memos
3. iCalendar Object Specification
3.1. Content Lines
3.1.1. List and Field Separators
3.1.2. Multiple Values
3.1.3. Binary Content
3.1.4. Character Set
3.2. Property Parameters
3.2.1. Alternate Text Representation
3.2.2. Common Name
3.2.3. Calendar User Type
3.2.4. Delegators
3.2.5. Delegatees
3.2.6. Directory Entry Reference
3.2.7. Inline Encoding
3.2.8. Format Type
3.2.9. Free/Busy Time Type
3.2.10. Language
3.2.11. Group or List Membership
3.2.12. Participation Status
3.2.13. Recurrence Identifier Range
3.2.14. Alarm Trigger Relationship
3.2.15. Relationship Type
3.2.16. Participation Role
3.2.17. RSVP Expectation
3.2.18. Sent By
3.2.19. Time Zone Identifier
3.2.20. Value Data Types
3.3. Property Value Data Types
3.3.1. Binary
3.3.2. Boolean
3.3.3. Calendar User Address
3.3.4. Date
3.3.5. Date-Time
3.3.6. Duration
3.3.7. Float
3.3.8. Integer
3.3.9. Period of Time
3.3.10. Recurrence Rule
3.3.11. Text
3.3.12. Time
3.3.13. URI
3.3.14. UTC Offset
3.4. iCalendar Object

Page 1 of 3

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.