Hi Christer,
Thanks for reaching out! Absolutely! Events Calendar PRO includes support for nearly any type of recurrence pattern, including multiple patterns, changing patterns, or no pattern at all (if you’d like to select specific dates and times, as in your example here). You can read more about recurring events in Events Calendar PRO on our Knowledgebase–feel free to follow up if you should have any other questions after giving our documentation a look over!
At the moment, I’m afraid we do not support qTranslate-X with our plugins, and we can’t make any guarantees as to how this combination might perform on your site. WPML is the only multi-language plugin we currently support for our products.
I hope that helps to answer your questions! Thanks again for getting in touch, and let us know if there’s anything else we can assist with!