[OASIS Issue Tracker] (ODATA-917) 5.1.1.2.1 Addition and 5.1.1.2.2 Subtraction: Date add/sub Duration is DateTimeOffset - but in which time zone?

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     [ https://issues.oasis-open.org/browse/ODATA-917?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Pizzo updated ODATA-917:
--------------------------------

    Proposal: 
Rules are actually present in XML Schema 1.1 Part 2: E.3.3 Adding Durations to DateTime.

Rules:
1) Convert date to datetime (in any timezone) with zero hh:mm:ss
2) Add/subtract duration
3) Convert to date by dropping fractional days and timezone

  was:
Date add duration is date, and lose fractional days.



> 5.1.1.2.1 Addition and 5.1.1.2.2 Subtraction: Date add/sub Duration is DateTimeOffset - but in which time zone?
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: ODATA-917
>                 URL: https://issues.oasis-open.org/browse/ODATA-917
>             Project: OASIS Open Data Protocol (OData) TC
>          Issue Type: Bug
>          Components: OData URL Conventions
>    Affects Versions: V4.0_ERRATA02
>         Environment: [Proposed]
>            Reporter: Ralf Handl
>             Fix For: V4.0_ERRATA03
>
>
> The cited sections allow these operations but fail to provide guidance on how to implement them.
> DateTimeOffset must have a time zone, date cannot have a time zone.
> It would be better to 
> - disallow these operations altogether
> - define the result type as Date and specify how to round or ignore sub-day duration portions



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