Time issue on the server

Hello,

we have a Servoy server running on a linux box. Our customers report that sometimes appointments are shown two hours too early. I checked the server when they last reported that and saw that the client time connected was shown as UTC. After a server restart the time was correctly CEST. This seems to happen once in a while. A server restart usually solves the issue.

Does anyone have an idea what goes wrong here?

Thanks
Patrick