While there is a tag for real time (rltime12 / rltime24) there is no date tag that i am aware of.

I would find that feature highly useful, because i could see the date & time a screenshots in the screenshots itself.

You can use the formattedtime fuction. It uses Java's SimpleDateFormat.

<formattedtime>
    <str>dd.mm.yyyy</str>
</formattedtime>

Oh thanks for the tip, i didnt know that.
Ill cloes this now :)