Backup Exec should display dates in the same format as the Operating System is configured for, however, we do sometimes have regional defects where the US standards for dates (mm/dd/yyyy) are displayed when you are using one of the non-US formats of dd/mm/yyyy. When this happens it is usually not all of the dates in the product that show this way and we need to know exactly which area of the product displays incorrectly so we can confirm if it is something we are already aware of or something new.
Also if you have not found a TECH article for BE 2014 mentioning your specific condition then I'd recommend logging a formal support case (although please do not do this if you are seeing this date format inside of SQL and not as part of the usual admin console display)