using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var today = DateTime.UtcNow.Date;

        foreach(var i in Enumerable.Range(0, 24))

        {

            var time = today.AddMinutes((i * 30) + 1);

​

            var count = ((time.Hour * 60) + time.Minute)/30;

            Console.WriteLine($"{time}-{count}");

        }

    }

}