Here I have created sample that will help you out.
HTML
<div>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
function GetCurrentTime() {
alert(String.format("{0}:{1}:{2} {3}"
, $('[id*=TimeSelector1]').find('[id*=txtHour]').val()
, $('[id*=TimeSelector1]').find('[id*=txtMinute]').val()
, $('[id*=TimeSelector1]').find('[id*=txtSecond]').val()
, $('[id*=TimeSelector1]').find('[id*=txtAmPm]').val()));
return false;
}
</script>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<br />
<cc1:TimeSelector ID="TimeSelector1" runat="server" AllowSecondEditing="true">
</cc1:TimeSelector>
<hr />
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClientClick="return GetCurrentTime()" />
</div>
C#
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
DateTime dt = DateTime.Parse("12:35 PM");
MKB.TimePicker.TimeSelector.AmPmSpec am_pm;
if (dt.ToString("tt") == "AM")
{
am_pm = MKB.TimePicker.TimeSelector.AmPmSpec.AM;
}
else
{
am_pm = MKB.TimePicker.TimeSelector.AmPmSpec.PM;
}
TimeSelector1.SetTime(dt.Hour, dt.Minute, am_pm);
}
}
Screenshot