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Editorial Team
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Asked: 2026-06-01T06:09:12+00:00

I received some xml data that includes a timestamp taken at midnight of the

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I received some xml data that includes a timestamp taken at midnight of the application’s local time in the xml schema standard dateTime format (see http://www.w3.org/TR/xmlschema-2/#dateTime for reference).

The timestamp is: 2012-02-04T13:00:00Z

Based on information I’ve been able to find, the relevant timezone is ‘(GMT+13:00) Nukualofa’ which corresponds to the location ‘Pacific/Tongatapu’. We are only supposed to be receiving data with timestamps that correspond to timezones/locations applicable to the contiguous 48 US states, so I am bewildered as to what timezone/location corresponds to the timestamp.

My question is, based on a dateTime of 2012-02-04T13:00:00Z, what UTC timezone, location on earth, etc. does it correspond?

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  1. Editorial Team

    I think that your interpretation might be off; I can’t see how you ended up with GMT+13:00 from 13:00:00Z.

    The XSD spec gives the following example:

    2002-10-10T12:00:00+05:00 is 2002-10-10T07:00:00Z 
2002-10-10T00:00:00+05:00 is 2002-10-09T19:00:00Z

    A nonnegative duration means that the time zone is ahead; negative is behind.

    Assuming that the timestamp was taken at midnight (12:00AM), and it matched 13:00:00Z, then you could offset this either ahead or behind:

    Behind: 2012-02-04T00:00:00-13:00 is 2012-02-04T13:00:00Z
Ahead:  2012-02-05T00:00:00+11:00 is 2012-02-04T13:00:00Z

    The only one valid is the ahead (there is no -13); As to what is in that time zone, take a look here.

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