Weird display of event date and time

I've installed the Events+ plugin but seeing weird dates and times on mobile and when not registered (visitor) on the site.

There are either 1 January 1970 or crazy dates like this one:
https://www.dropbox.com/s/wi33tkpo0fyb3ey/Screenshot%202014-01-27%2013.26.21.png

Thank you for your assistance.