The ability to convert directly from one timezone to another is coming (finally!) in .NET 3.5 via the addition of the System.TimeZoneInfo object.

Example C# Code: DateTime oldTime = new DateTime(2007, 6, 23, 10, 0, 0); TimeZoneInfo timeZone1 = TimeZoneInfo.FindSystemTimeZoneById(“Central Standard Time”); TimeZoneInfo timeZone2 = TimeZoneInfo.FindSystemTimeZoneById(“Eastern Standard Time”); DateTime newTime = TimeZoneInfo.ConvertTime(oldTime, timeZone1, timeZone2);