You can translate the whole plugin from the settings page > texts tab in admin panel.
For those who face a problem in the date not automatically being translated to your desired language:
Uncomment (remove “//”) line ~ 185 from eventBookingPro/EventBookingProClass.php:
// setlocale(LC_TIME, 'de_DE', 'de_DE.UTF-8');
Change de_De to your own language: