(ok I've started writing a BNF. This is going to generate questions.)
Feature 109: Date with time zone indicator
shows two examples, a date and a date/time, both with time zone indicators.
1. We don't need to include date (with no time) with a time zone indicator, do we? Even though this is supported by ISO 8601, as well as W3C schema, can we profile this out of our spec?
2. For time, is hour:minute:second sufficient, or do we need to support fraction of a second?
3. We don't need to support partial time zones, do we?