Part 2, 3.2.7.3 Timezones

current version:

 When a timezone is added to a UTC dateTime, the result is the date and time 
"in that timezone". For example, 2002-10-10T12:00:00+05:00 is 
2002-10-10T07:00:00Z and 2002-10-10T00:00:00+05:00 is 2002-10-09T19:00:00Z.

future version (?):

When a timezone-like duration is added to a UTC dateTime, the UTC 
representation of the result is a date and time reflecting the "local part" 
of the representation of the original dateTime relative to that timezone. 
For example, 2002-10-10T12:00:00+05:00 is 2002-10-10T07:00:00Z and 
2002-10-10T07:00:00Z+P5H results in 2002-10-10T12:00:00Z.

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I hope this does not open old sores :-)

KB