Hi  itsme,
Refer below sample.
HTML
<asp:Repeater runat="server" ID="rptTimes">
    <HeaderTemplate>
        <table cellspacing="0" rules="all" border="1">
            <tr>
                <th>
                    Times
                </th>
    </HeaderTemplate>
    <ItemTemplate>
        <tr>
            <td>
                <asp:Label Text='<%#Eval("Start") %>' runat="server" ID="lblTime" />
                To
                <asp:Label Text='<%#Eval("End") %>' runat="server" ID="Label1" />
            </td>
        </tr>
    </ItemTemplate>
    <FooterTemplate>
        </table>
    </FooterTemplate>
</asp:Repeater>
Namespaces
C#
using System.Data;
VB.Net
Imports System.Data
Code
C#
protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[] { new DataColumn("Start", typeof(string)), new DataColumn("End", typeof(string)) });
        TimeSpan startTime = DateTime.Now.TimeOfDay;
        TimeSpan duration = TimeSpan.FromMinutes(60);
        for (int i = 0; i <= 5; i++)
        {
            startTime += duration.Add(duration);
            dt.Rows.Add(startTime.ToString("hh':'mm"), startTime.Add(duration).ToString("hh':'mm"));
        }
        rptTimes.DataSource = dt;
        rptTimes.DataBind();
    }
}
VB.Net
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As DataTable = New DataTable()
        dt.Columns.AddRange(New DataColumn() {New DataColumn("Start", GetType(String)), New DataColumn("End", GetType(String))})
        Dim startTime As TimeSpan = DateTime.Now.TimeOfDay
        Dim duration As TimeSpan = TimeSpan.FromMinutes(60)
        For i As Integer = 0 To 5
            startTime += duration.Add(duration)
            dt.Rows.Add(startTime.ToString("hh':'mm"), startTime.Add(duration).ToString("hh':'mm"))
        Next
        rptTimes.DataSource = dt
        rptTimes.DataBind()
    End If
End Sub
Screenshot
