using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        DateTime time = UnixTimeStampToDateTime(1542058720);

        Console.WriteLine(time);

    }

    private static DateTime UnixTimeStampToDateTime(long unixTimeStamp)

    {

        // Unix timestamp is seconds past epoch

        System.DateTime dtDateTime = new DateTime(1970,1,1,0,0,0,0,System.DateTimeKind.Utc);

        dtDateTime = dtDateTime.AddSeconds( unixTimeStamp ).ToLocalTime();

        return dtDateTime;      

    }

}