C#: How to start a thread at a specific time [duplicate]

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You can set up a timer at 16:00. I’ve answered a similar question here.
That should help you for sure.

private System.Threading.Timer timer;
private void SetUpTimer(TimeSpan alertTime)
{
     DateTime current = DateTime.Now;
     TimeSpan timeToGo = alertTime - current.TimeOfDay;
     if (timeToGo < TimeSpan.Zero)
     {
        return;//time already passed
     }
     this.timer = new System.Threading.Timer(x =>
     {
         this.SomeMethodRunsAt1600();
     }, null, timeToGo, Timeout.InfiniteTimeSpan);
}

private void SomeMethodRunsAt1600()
{
    //this runs at 16:00:00
}

Then set it up using

SetUpTimer(new TimeSpan(16, 00, 00));

Edit: Keep the reference of the Timer as it’s subject to garbage collection irrespective of the Timer is active or not.

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