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BclDateTimeZone for Windhoek (Namibia) doesn't match Windows behaviour #115

GoogleCodeExporter opened this issue Mar 15, 2015 · 3 comments


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The Windhoek time zone in Windows is particularly odd - it has a negative 
daylight saving time for some of the time, to allow for a change in standard 
time (which doesn't seem to agree with TZDB, but never mind).

There are two adjustment rules, with the boundary being at the start of 2011. 
Normally adjustment rules has the same offset both sides, but in this case the 
rule boundary also acts as a daylight saving transition, apparently. We don't 
currently cope with this. More investigation required.

Original issue reported on by jonathan.skeet on 5 Sep 2012 at 9:28

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Output from a quick diagnostic tool showing transitions from the BCL:

01/01/2009 01:00:00
06/04/2009 00:00:00
07/09/2009 01:00:00
05/04/2010 00:00:00
06/09/2010 01:00:00
01/01/2011 02:00:00
03/04/2011 01:00:00
05/09/2011 02:00:00
01/04/2012 01:00:00
03/09/2012 02:00:00
07/04/2013 01:00:00
02/09/2013 02:00:00

So the adjustment rule change also acts as a transition :(

Original comment by jonathan.skeet on 6 Sep 2012 at 9:13

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This issue was closed by revision 7ed7fcbfa0da.

Original comment by jonathan.skeet on 22 Oct 2012 at 8:14

  • Changed state: Fixed

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Original comment by malcolm.rowe on 10 Nov 2012 at 10:20

  • Added labels: Milestone-1.0.0
  • Removed labels: Milestone-1.0

@malcolmr malcolmr added the bug label Mar 15, 2015
@malcolmr malcolmr modified the milestone: 1.0.0 Mar 15, 2015
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