services.cs

public partial class Service1 : ServiceBase
	{
		private Timer timer = new Timer(300000);

		public Service1()
		{
			InitializeComponent();
		}

		protected override void OnStart(string[] args)
		{
			Tick();
			timer.Elapsed += timer_Elapsed;
			timer.Start();
		}

		protected override void OnStop()
		{
		}

		private static void timer_Elapsed(object sender, ElapsedEventArgs e)
		{
			Tick();
		}

		private static void Tick()
		{
			if (DateTime.Now.TimeOfDay > new TimeSpan(4, 0, 0) && DateTime.Now.TimeOfDay < new TimeSpan(21, 0, 0))
			{
				try
				{
					var t = WebRequest.Create("http://galbot.herokuapp.com");
					t.Timeout = int.MaxValue;
					var s = t.GetResponse();
				}
				catch
				{
				}
			}
		}
	}