culture of timer threads bug?

I note that when I set a culture in the globalization section of the
web.config this is picked up and used for methods such as ToString() for
dates etc.
However, it is not picked up for timers which I create in my web service and
the culture (but not uiCulture) revert to the system default!

Does anyone know if this is a bug and how to get around it?

asp.net 1.1 web service

Thanks in advance.

namespace TestCultureWebService
{
public class Service1 : System.Web.Services.WebService
{
public Service1()
{
InitializeComponent();

string s = System.Threading.Thread.CurrentThread.CurrentCultu re.ToString();

_madeAt = DateTime.Now;
_timer = new System.Timers.Timer();
_timer.Enabled = true;
_timer.AutoReset = true;
_timer.Interval = 15000;
_timer.Elapsed += new System.Timers.ElapsedEventHandler(_timer_Elapsed);
}

System.Timers.Timer _timer;
DateTime _madeAt;

#region Component Designer generated code

//Required by the Web Services Designer
private IContainer components = null;

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
}

/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if(disposing && components != null)
{
components.Dispose();
}
base.Dispose(disposing);
}

#endregion

[WebMethod]
public string HelloWorld()
{
string s = System.Threading.Thread.CurrentThread.CurrentCultu re.ToString();
return s + " " + _madeAt.ToShortDateString() + " " +
_madeAt.ToLongTimeString();
}

private void _timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
string s1 =
System.Threading.Thread.CurrentThread.CurrentCultu re.ToString() + " " +
_madeAt.ToShortDateString() + " " + _madeAt.ToLongTimeString();
}
}
}