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https://issues.apache.org/jira/browse/PDFBOX-2420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maciej Woźniak updated PDFBOX-2420:
-----------------------------------
Attachment:
_PDFBOX_2420__Improved_handling_timezones_between__14_and__14_hours_.patch
I have improved calculating the timezones. If timezone is between 14 and +14
hours, there's nothing to do. If not, I normalize the timezone to be between
-12 and +12 hours.
> DateConverter doesn't handle time zones outside -12 to +12 range properly
> -------------------------------------------------------------------------
>
> Key: PDFBOX-2420
> URL: https://issues.apache.org/jira/browse/PDFBOX-2420
> Project: PDFBox
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 2.0.0
> Reporter: Arjohn Kampman
> Fix For: 2.1.0
>
> Attachments:
> _PDFBOX_2420__Improved_handling_timezones_between__14_and__14_hours_.patch
>
>
> DateConverter normalizes time zones in restrainTZoffset(...) to a value that
> is between -12:00 and +12:00. So a time zone like +13:00 gets normalized to
> -11:00. However, the date itself is not adapted accordingly. As a result, a
> time stamp like "2014-7-20T05:0:00+1300" gets changed to
> "2014-7-20T05:0:00-1100", which is actually 24 hours later! To compensate for
> the time zone change, 24 hours should have been subtracted from the date:
> "2014-7-19T05:0:00-1100".
> Personally, I'd prefer to leave the time zones untouched completely. Note
> that XML Schema defines time zones up to +/- 14:00 to be valid:
> http://www.w3.org/TR/xmlschema-2/#dateTime-timezones. For any time zones out
> of that range either generate an error or consider a garbage-in-garbage-out
> policy.
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