xs:date values and strongly typed Datasets

I have an xsd that I has been run through the MSDataSetGenerator in Visual Studio.

My date columns in the xsd are defined as xs:date (example below):

<xs:element name="DateDeath" type="xs:date" minOccurs="1"/>

I write the data into the row of my strongly typed dataset class like this:

myRow["DateDeath"] = "1933-01-01"

When I call WriteXml() on the dataset to generate the xml file, the xml file has DateTime values:

<DateDeath>1933-01-01T00:00:00-05:00</DateDeath>

The problem I am having is that when I load the created xml file and try to validate it, I get errors that complain that the date is not valid. If I manually remove the time related stuff (the T and everything after it) the errors go away.

How can I get the strongly typed dataset to write the xml so that it can be validated against the xsd (i.e. discard the time and timezone information)?