VCardDav Working Group B. Leiba
Internet-Draft Internet Messaging Technology
Intended status: Standards Track March 25, 2009
Expires: September 26, 2009
Definition of IANA Registry for Timezone Names
draft-leiba-tzregistry-00
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Abstract
VCards need a stable, well defined list of timezone names, so that
users can create VCards that refer to timezones. There is no common
list of such names, and other standards need timezone names also.
This document creates an IANA registry of timezone names, and
initially populates the list.
Leiba Expires September 26, 2009 [Page 1]
Internet-Draft Timezone Name Registry Definition March 2009
Initial version
o Define timezone registry.
o Defer initial population with Olsen database until we like the
basic document.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
2.1. New registry for timezone names . . . . . . . . . . . . . . . 3
2.2. Initial population of timezone-names registry . . . . . . . . 3
3. Security Considerations . . . . . . . . . . . . . . . . . . . 4
4. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.1. Normative References . . . . . . . . . . . . . . . . . . . . 4
4.2. Informative References . . . . . . . . . . . . . . . . . . . 4
Author's Address . . . . . . . . . . . . . . . . . . . . . . 4
Intellectual Property and Copyright Statements . . . . . . . 5
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1. Introduction
VCards need a stable, well defined list of timezone names, so that
users can create VCards that refer to timezones. There is no common
list of such names, and other standards need timezone names also.
This document creates an IANA registry of timezone names, and
initially populates the list.
This document defines only the names, leaving the definition of the
timezone rules ("normal offset is UTC+2", "switch to summer time on
the third Sunday in March", etc) out of scope. The registry contains
an optional URI for each defined timezone, and it's possible for that
URI to point to a place where such rule definitions can be obtained.
A timezone name has the following ABNF [ABNF] syntax:
tzname = ALPHA *127(ALPHA / DIGIT)
; may have mixed case for readability
; interpreted case-insensitively
2. IANA Considerations
2.1. New registry for timezone names
IANA is asked to create a new registry for timezone names. This
registry contains only IETF-controlled timezone names. New names are
registered using the "Specification Required" policy [IANA].
[[It won't be "Specification Required". What should it be?]]
This defines the template for a new registry for timezone names, to
be created as http://www.iana.org/assignments/timezone-names. There
are no initial entries for this registry.
To: iana@iana.org
Subject: Registration of new timezone name
Timezone name: [a short US-ASCII string with no internal meaning]
Description: [a human-readable US-ASCII string, in English, that
describes the meaning of this timezone (such as, "the time zone in
New York City")]
Information URI: [A URI that points to more information about this
timezone. Specify "none" if there is no appropriate URI.]
2.2. Initial population of timezone-names registry
The following are the initial names to be registered in the timezone-
names registry, to be entered in
http://www.iana.org/assignments/timezone-names.
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[[anchor1: We'll be filling this in from the Olsen DB...]]
Timezone name: ??
Description: a time zone.
Information URI: none
3. Security Considerations
This document defines an IANA registry. There are no security
considerations.
4. References
4.1. Normative References
[ABNF] Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax
Specifications: ABNF", RFC 4234, October 2005.
4.2. Informative References
[IANA] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA
Considerations Section in RFCs", BCP 26, RFC 2434,
October 1998.
Author's Address
Barry Leiba
Internet Messaging Technology
Phone: +1 646 827 0648
Email: barryleiba@computer.org
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