How to Hide Show Panel based on Date Time and Current Date in ASP.Net

HTML

Here i have used Div tag. I have set Start Date and Expiry Date.

<div id="divHideOnDate" visible="false" runat="server">
    <span> This Information will be shown till Oct 11 10 2013</span></div>

C#

 protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            string startDate = "09/Oct/2013 07:10";
            string expiryDate = "11/Oct/2013 18:00";
            string date = System.DateTime.Now.ToString("dd/MMM/yyyy hh:mm");
            if (date == startDate)
            {
                divHideOnDate.Visible = true;
            }
            
            if (date == expiryDate)
            {
                divHideOnDate.Visible = false;
            }
        }
    }