Is it possible that the timezone is broken/stuck to EDT when parsing AIML to grab the date?

Testing the following code (uploaded as script to keep AIML functions):

<category>
    <pattern># time #</pattern>
    <template>
        <date locale="de_CH" timezone="-1" format="%c" />
    </template>
</category>

It returns:

Wed Sep 21 05:48:29 EDT 2016