using System;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

public class Program

{

    public static void Main()

    {

        DateTime startDay = new DateTime(2020, 01, 01, 23, 0, 0);

        int daysAhead = 8;

        int minutes = 40;

        int slots = 35;

        var dates = Enumerable.Range(0, daysAhead).SelectMany(day => Enumerable.Range(0, slots).Select(i => startDay.AddDays(day).AddMinutes(i * minutes)).ToList()).ToList();

        foreach (var d in dates)

        {

            Console.WriteLine(d);

        }

    }

}