public static void Main()
var prevDate = new DateTime(2021, 7, 15);
var today = DateTime.Now;
Console.WriteLine("prevDate: {0}", prevDate);
Console.WriteLine("today: {0}", today);
var diffOfDates = today.Subtract(prevDate);
Console.WriteLine("Difference in Timespan: {0}", diffOfDates);
Console.WriteLine("Difference in Days: {0}", diffOfDates.Days);
Console.WriteLine("Difference in Hours: {0}", diffOfDates.Hours);
Console.WriteLine("Difference in Miniutes: {0}", diffOfDates.Minutes);
Console.WriteLine("Difference in Seconds: {0}", diffOfDates.Seconds);
Console.WriteLine("Difference in Milliseconds: {0}", diffOfDates.Milliseconds);
Console.WriteLine("Difference in Ticks: {0}", diffOfDates.Ticks);