Пример реализации таймера, который должен запускать метод в определенное время

Timer.cs

using System;
using System.Diagnostics;
using System.Threading;

namespace Timer_test
{
    class Program
    {
        static Process myProcess = Process.GetCurrentProcess();
        static long peakPagedMem = 0,
                peakWorkingSet = 0,
                peakVirtualMem = 0;
        static void Main(string[] args)
        {
            Thread thread = new Thread(TimerThread)
            {
                IsBackground = true,
                Name = "TimerThread"
            };
            thread.Start();

            Console.ReadLine();
        }

        private static void TimerThread()
        {
            System.Timers.Timer timer = new System.Timers.Timer()
            {
                Enabled = true,
                Interval = 3600000,
                AutoReset = true
            };
            timer.Elapsed += Timer_Elapsed;
            timer.Start();
        }

        private static void Timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            //if (DateTime.Now.Hour == 6 && DateTime.Now.Minute == 00 && DateTime.Now.Second == 00)
                Print();
        }

        private static void Print()
        {
            Console.WriteLine("\n" + DateTime.Now.ToString() + "\n");

            Console.WriteLine($"{myProcess} -");
            Console.WriteLine("-------------------------------------");

            Console.WriteLine($"  Physical memory usage     : {myProcess.WorkingSet64}");
            Console.WriteLine($"  Base priority             : {myProcess.BasePriority}");
            Console.WriteLine($"  Priority class            : {myProcess.PriorityClass}");
            Console.WriteLine($"  User processor time       : {myProcess.UserProcessorTime}");
            Console.WriteLine($"  Privileged processor time : {myProcess.PrivilegedProcessorTime}");
            Console.WriteLine($"  Total processor time      : {myProcess.TotalProcessorTime}");
            Console.WriteLine($"  Paged system memory size  : {myProcess.PagedSystemMemorySize64}");
            Console.WriteLine($"  Paged memory size         : {myProcess.PagedMemorySize64}");

            // Update the values for the overall peak memory statistics.
            peakPagedMem = myProcess.PeakPagedMemorySize64;
            peakVirtualMem = myProcess.PeakVirtualMemorySize64;
            peakWorkingSet = myProcess.PeakWorkingSet64;

            Console.WriteLine();

            // Display peak memory statistics for the process.
            Console.WriteLine($"  Peak physical memory usage : {peakWorkingSet}");
            Console.WriteLine($"  Peak paged memory usage    : {peakPagedMem}");
            Console.WriteLine($"  Peak virtual memory usage  : {peakVirtualMem}");
        }
    }
}

Как посмотреть потребляемую память процессом: ссылка на msdn 1, ссылка на msdn 2
Как использовать таймеры: ссылка на msdn