Opening WinForm according to computer time

Question

I have a project working for my clients, now I am trying to make my licencing system more advanced and I want to add one check in software.
The thing is that I want when my client is working on my software and computer clock shows some time (e.g. 12:00) I want to open one of WinForms for checking online licence that user have.
I thought this could be very easy to make, but since I don't want to use Timers inside my code and make my software work slower I am now kind a stack into my own code.

This is what I've tried for now:

    Dim day As String = Format(Today, "dddd")
    Dim time As Date
    Dim CurrHour As Integer
    Dim CurrMinute As Integer
    Dim CurrSecond As Integer
    time = My.Computer.Clock.LocalTime 'Ive tried to use DateTime.Now here
    CurrHour = time.Hour ' Get current hour value
    CurrMinute = time.Minute ' Get current minute value
    CurrSecond = time.Second ' Get current second value
    If CurrHour = 12 AndAlso CurrMinute = 0 AndAlso CurrSecond = 30 Then
        MsgBox("12 hours 0 minutes 30 seconds")
    Else
        Exit Sub
    End If
End Sub

Is there any other way except using Timer.Tick for this to make it working?

Answer 1

Why not use a Timer? You can set it the interval to several hours and it only ticks once.

When a timespan there should be no problem (MSDN)