.NET DateTime.Now returns incorrect time when time zone is changed

Question

This problem occurred during daylight saving time change. After the change occurred, we\'ve noticed that our server application started writing into the log incorrect time -

Answer 1

The fully qualified class above was slightly off, but perhaps it changed in .NET 3.5.

System.Globalization.CultureInfo.CurrentCulture.ClearCachedData()

also don't forget to include (in C#.NET) or import (with VB.NET) the library reference System.Globalization.CultureInfo

Call it just before using DateTime.Now. Although it's probably best to call it in the startup event of your Global.asax file.

========== Also make sure you're checking the timezone on Windows Server itself, or your local machine depending on where the IIS web server is running.