If you’re using Sql Server 2008 with Entity Framework and have a DateTime field you have no doubt come across this error when Inserting or Updating an Entity System.Data.SqlClient.SqlException: The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value. The problem here lies in the fact that the .NET DateTime.MinValue equals 0001-1-1 but the Sql Server DateTime only covers 1753-1-1 through 9999-12-31 The very simple solution is to use DateTime2 in Sql Server 2008 which covers 0001-1-1 through 9999-12-31. DateTime2 has also has some other benefits .