I think you meen opening at 2012-08-31T22:00:00 UTC (CEST time zone UTC+2) and closing at 2012-09-30T22:59:59 UTC (Canary Islands time zone UTC+1). Right?
> Date: Fri, 24 Aug 2012 15:31:55 +0200
> From: platonides@gmail.com
> To: wikilovesmonuments@lists.wikimedia.org
> Subject: Re: [Wiki Loves Monuments] September per time zones
>
> On 24/08/12 13:38, Tomasz W. Koz³owski wrote:
>
> For WLM-ES we decided to put the contest datetimes as
> 2012-08-31T22:00:00 UTC to 2012-08-31T22:59:59 UTC, which is the union
> of September in the two timezones used in Spain.
>
> Best regards
>
>
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