bug#17600: Maybe a bug of `date`

[Pádraig Brady]

tag 17600 notabug
close 17600
stop

On 05/26/2014 09:45 AM, HoHo Zhao wrote:
> Hi team,
> 
> I found this "bug" maybe I am lazy to look through the info document.
> 
> Correct:
>       $ TZ=UTC date -d "15:00 BST"
>       Mon May 26 14:00:00 UTC 2014
> 
> Correct:
>       $ TZ=UTC date -d "15:00 EST"
>       Mon May 26 20:00:00 UTC 2014
> 
> Correct:
>       $ TZ=UTC date -d "15:00 JST"   (Japan Standard Time)
>       Mon May 26 06:00:00 UTC 2014
> 
> Wrong:
>       $ TZ=UTC date -d "15:00 CST"   (China Standard Time)
>       Mon May 26 21:00:00 UTC 2014
> 
> So the problem is with "CST" in the date STRING.
> 
> Thanks,

I think this is due to the ambiguity of CST.
You're better using unambiguous location based zones

  TZ=UTC date -d 'TZ="Asia/Chongqing" 15:00'

More details at http://www.pixelbeat.org/docs/linux_timezones/

thanks,
Pádraig.