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

[2446bis] Daboo, C., "iCalendar Transport-Independent Interoperability Protocol (iTIP)", Work in Progress, April 2009.

[2447bis] Melnikov, A., "iCalendar Message-Based Interoperability Protocol (iMIP)", Work in Progress, June 2008.

[ANSI INCITS 61-1986] International Committee for Information Technology, "Representation of Geographic Point Locations for Information Interchange (formerly ANSI X3.61-1986 (R1997))", ANSI INCITS 61-1986 (R2007), 2007.

[RFC1738] Berners-Lee, T., Masinter, L., and M. McCahill, "Uniform Resource Locators (URL)", RFC 1738, December 1994.

[RFC2392] Levinson, E., "Content-ID and Message-ID Uniform Resource Locators", RFC 2392, August 1998.

[RFC2397] Masinter, L., "The "data" URL scheme", RFC 2397, August 1998.

[RFC2425] Howes, T., Smith, M., and F. Dawson, "A MIME Content-Type for Directory Information", RFC 2425, September 1998.

[RFC2426] Dawson, F. and T. Howes, "vCard MIME Directory Profile", RFC 2426, September 1998.

[RFC2445] Dawson, F. and Stenerson, D., "Internet Calendaring and Scheduling Core Object Specification (iCalendar)", RFC 2445, November 1998.

[RFC2616] Fielding, R., Gettys, J., Mogul, J., Frystyk, H., Masinter, L., Leach, P., and T. Berners- Lee, "Hypertext Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.

[RFC2818] Rescorla, E., "HTTP Over TLS", RFC 2818, May 2000.

[RFC4516] Smith, M. and T. Howes, "Lightweight Directory Access Protocol (LDAP): Uniform Resource Locator", RFC 4516, June 2006.

[RFC4791] Daboo, C., Desruisseaux, B., and L. Dusseault, "Calendaring Extensions to WebDAV (CalDAV)", RFC 4791, March 2007.

[TZDB] Eggert, P. and A.D. Olson, "Sources for Time Zone and Daylight Saving Time Data", July 2009, .

[VCAL] Internet Mail Consortium, "vCalendar

The Electronic Calendaring and Scheduling Exchange Format", September 1996, .

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.