Change am/pm to 24 hour format

[cyberius0]

Hello,
first a big, big thank you for this application! It works really well.
I just made some small cosmetic changes (e.g. date formatting).

This form is being created with this file: Kyela / Resources / views / event / edit.html.twig

I changed the "timepicker" format to HH:mm

   <script type="text/javascript">
        $('.datepicker').datepicker({ dateFormat: 'dd.mm.yy' });
        $('.timepicker').timepicker({ showMeridian: false, minuteStep: 5, defaultTime: false, format: 'HH:mm'});
    </script>

But the red circled value is still AM/PM. Where can I change it? Please give me a hint, thank you :-)