SAP Server/User profile time zone

Hello experts,

I am an SD/ABAP person but have a question on the basis side. We have a set of App servers with load balancing with central Europe time. The same set of servers are used all over the world. Personal user time in User profile is set to the zone the user actually works. Is this a stable way to set the system?

I understand, for example, that the posting date of a document would reflect user time and document creation date would reflect server time.

Whats the best architecture for such a global scenario? Please share your experience.

Thanks,

Raj