How to elegantly deal with timezones

Question

I have a website that is hosted in a different timezone than the users using the application. In addition to this, users can have a specific timezone. I was wondering how ot

Answer 1

This is probably a sledgehammer to crack a nut but you could inject a layer between the UI and Business layers which transparently converts datetimes to the local time on returned object graphs, and to UTC on input datetime parameters.

I imagine this could be achieved using PostSharp or some inversion of control container.

Personally, I'd just go with explicitly converting your datetimes in the UI...