How to develop Analog clock and Digital clock in WPF application

http://blog.ixpub.net/html/02/16565802-359199.html This is a example about how to develop a clock, You can change it for yourself, I think it's not the key point. The key point is how to get the end user's timezone, It's up to how to deploy your program, generally speaking, we often deploy the logic layer and DB layer in server and deploy the UI layer in client,if your program deployed use this method, I'm afraid it's hard to get client 's timezone, make sure your logic layer deployed in client.