RFC 3339, "Date and Time on the Internet: Timestamps", July 2002Source of RFC: impp (app)
Errata ID: 1584
Reported By: Roberto Javier Godoy
Date Reported: 2008-11-03
Verifier Name: Alexey Melnikov
Date Verified: 2010-05-20
Section Appendix A says:
Note that due to ambiguities in ISO 8601, some interpretations had to be made. First, ISO 8601 is not clear if mixtures of basic and extended format are permissible. This grammar permits mixtures.
It should say:
This grammar permits mixtures of basic and extended format.
ISO 8601:2000 section 5.4.2 reads:
d) the expression shall either be completely in basic format, in which case the minimum number of separators necessary for the required expression is used, or completely in extended format, in which case additional separators shall be used in accordance with 5.2 and 5.3.
(There is similar text in section 4.3.3 of ISO 8601:2004)