TimeZoneInfo in Portable Class Library

I have a requirement to get "Mountain Standard Time" time zone information from a portable class library. In a WPF application, I got the same thing with the code below.

TimeZoneInfo.FindSystemTimeZoneById("Mountain Standard Time");

      

        
        
        
      

    

But in PCL I don't see this functionality. Can anyone please tell me how I can achieve the same in PCL?

Thanks in Advance. Roshil