How to Update Database Datetime in This Format " dd MMM yyyy HH:mm:ss 'GMT' "With Vb.net Program

Question

I Searched a lot about how to Get The Time online and i found a solution You will found it in my Codes.

My Aim is to make a MemberShip DateTime , First Step to make the program get the Time from internet startdate then add the Time which is the membership time as enddate,Second Step when the program run again it will replace the start time with the actual time "Got from internet too" and substract it with the enddate

Here is My Database Structure (Note i tried to make the enddate and startdate As DateTime but it failed):

Here is my Program :

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here is my code :

Imports System.Globalization
Imports System.Net
Imports MySql.Data.MySqlClient


Public Class Form1
    Dim date1 As DateTime
    Dim date2 As DateTime
    Dim date3 As DateTime
    Dim x As DateTime
    Public Shared Function GetNistTime() As DateTime
        Dim myHttpWebRequest = CType(WebRequest.Create("http://www.microsoft.com"), HttpWebRequest)

        Dim response = myHttpWebRequest.GetResponse()
        Dim todaysDates As String = response.Headers("date")
        Return DateTime.ParseExact(todaysDates, "ddd, dd MMM yyyy HH:mm:ss 'GMT'", CultureInfo.InvariantCulture.DateTimeFormat, DateTimeStyles.AssumeUniversal)
    End Function

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        x = GetNistTime()
        TextBox1.Text = x

        date1 = CStr(x.AddMonths(1))
        Dim MySqlConn = New MySqlConnection
        MySqlConn.ConnectionString = "server=localhost;userid=root;password=123456789;database=test"
        Dim Reader As MySqlDataReader
        Dim Query As String
        Dim sqlcommand As MySqlCommand
        Try
            MySqlConn.Open()
            Query = "UPDATE test.time SET startdate='" & x & "',enddate='" & date1 & "' WHERE username='program'"
            sqlcommand = New MySqlCommand(Query, MySqlConn)
            Reader = sqlcommand.ExecuteReader
        Catch ex As Exception
            MsgBox(ex.Message)
        Finally
            MySqlConn.Dispose()
        End Try

    End Sub

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        Dim MySqlConn = New MySqlConnection
        MySqlConn.ConnectionString = "server=localhost;userid=root;password=123456789;database=test"
        Dim Reader As MySqlDataReader
        Dim Query As String
        Dim sqlcommand As MySqlCommand
        Try
            MySqlConn.Open()
            Query = "Select * from test.time  WHERE username='program'"
            sqlcommand = New MySqlCommand(Query, MySqlConn)
            Reader = sqlcommand.ExecuteReader
            While Reader.Read
                date2 = Reader.GetDateTime("startdate")
                date3 = Reader.GetDateTime("enddate")
            End While
        Catch ex As Exception
            MsgBox(ex.Message)
        Finally
            MySqlConn.Dispose()
        End Try
        TextBox2.Text = date2
        TextBox3.Text = date3
    End Sub
End Class

When i Run the Program and Press button2 I got this Error:

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then when i press ok on ex.message this writen in TextBox2 & TextBox3:

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This is the out put which stored in the Database:

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Please Help Me And Edit anything you Want in code or here, if you have another Idea Let me know it, sorry if i put All the Details and seem boring,thanks

i Know a way to replace "ص" or "م" to "AM" and "PM" If you have Any way to get the Date with "Am" and "PM" directly i would be Grateful