It sounds like it might be an issue with the 12 hour vs. the 24 hour clock. Most European countries use a 24 hour clock. I believe the default clock setting is h:i A whereas the 24 hour setting is H:i
Is the user using the 12 hour setting or the 24 hour setting? Perhaps changing it in the Date and Time options will resolve the issue.
Yes, I did consider that and noted the user is using a 12 hour format, and so I tried a 24 hour format, but I then got "H:i" where the time should be instead of "h:i A".