Unfortunately, the date is currently locked to "time ago" format (as on Facebook etc). We need to include a date-format setting, so you can choose your own format. This will be available in next major release, so you will have to wait a bit for this feature.
In the meantime, you could add dates manually into the top of your page
content something like this:
<h6 class="date"><time itemprop="dateUpdated" datetime="2015-11-01T00:00:00+01:00" title="01 November 2015">01 January 2015</time></h6>