using System;

public class Program

{

    public static void Main()

    {

        TimeSpan offset = TimeSpan.FromHours(-5);

        /*

        When

        Submitted:  4/5 9 PM ET

        Due: 4/6 3 AM ET

        Result should be 1

​

Submitted:  4/5 9 PM ET

Due: 4/6 8 AM ET

Result should be 1

​

Submitted:  4/5 9 PM ET

Due: 4/6 8 AM ET

Result should be 1

​

When

Submitted:  4/5 1 PM ET

Due: 4/6 9 PM ET

Result should be 1

​

When

Submitted:  4/5 1 PM ET

Due: 4/5 9 PM ET

Result should be 0

​

When

Submitted:  4/5 3 AM ET

Due: 4/5 9 PM ET

Result should be 0

​

When

Submitted:  4/5 3 AM ET

Due: 4/7 10 AM ET

Result should be 2

​

        */

​

        Console.WriteLine("Test 1: " + getDays(new DateTimeOffset(2018, 4, 5, 21, 0, 0, offset),new DateTimeOffset(2018, 4, 6, 3, 0, 0, offset)));

        Console.WriteLine("Test 2: " + getDays(new DateTimeOffset(2018, 4, 5, 21, 0, 0, offset),new DateTimeOffset(2018, 4, 6, 8, 0, 0, offset)));

​

        Console.WriteLine("Test 3: " + getDays(new DateTimeOffset(2018, 4, 5, 21, 0, 0, offset),new DateTimeOffset(2018, 4, 6, 8, 0, 0, offset)));

​

        Console.WriteLine("Test 4: " + getDays(new DateTimeOffset(2018, 4, 5, 13, 0, 0, offset),new DateTimeOffset(2018, 4, 6, 21, 0, 0, offset)));

​

        Console.WriteLine("Test 5: " + getDays(new DateTimeOffset(2018, 4, 5, 13, 0, 0, offset),new DateTimeOffset(2018, 4, 5, 21, 0, 0, offset)));

        Console.WriteLine("Test 6: " + getDays(new DateTimeOffset(2018, 4, 5, 3, 0, 0, offset),new DateTimeOffset(2018, 4, 5, 21, 0, 0, offset)));

        Console.WriteLine("Test 7: " + getDays(new DateTimeOffset(2018, 4, 5, 3, 0, 0, offset),new DateTimeOffset(2018, 4, 7, 10, 0, 0, offset)));

​

        Console.WriteLine("Test Negative: " + getDays(new DateTimeOffset(2018, 4, 5, 3, 0, 0, offset),new DateTimeOffset(2018, 4, 1, 10, 0, 0, offset)));

    }

    private static int getDays(DateTimeOffset from, DateTimeOffset to)

    {

            //return (int)(to.Date.AddDays(1).AddTicks(-1) - from).TotalDays;

        return (int)Math.Max((to.Date - from.Date).TotalDays,0);

    }

}