Convert variable string into dateformat

Hi there,

I use the eventon-plugin and the visitors can register or book via contact form to an event.
I get the title of the event with CF7_get_post_var key=’title’ and I get the date/time with CF7_get_post_var key=’evcal_srow’.
It works – I get both values.
In case of the title it’s ok – the real title as written but the Start-Date of the event I only get as string (unix timestamp).
How do I convert this in the form or in the email, that’s sent?

thanks in advance,
Maggie