How to change Date format in Blog page?

Hi,

I want change date format to Y-m-d.
How to change Date format in Blog page?

Thanks.

You can open the file: /templates/ja_findus/html/layouts/joomla/content/info_block/publish_date.php

change:

<?php echo HTMLHelper::_('date', $displayData['item']->publish_up, Text::_('d.M')); ?>

To:

<?php echo HTMLHelper::_('date', $displayData['item']->publish_up, Text::_('Y-m-d')); ?>