using System;

using Dates.Recurring;

​

public class Program

{

    public static void Main()

    {

        var localLastKnownDateTime = DateTime.Parse("27 April 2023");

        var recurs = Recurs.Starting(localLastKnownDateTime);

        var newDate = recurs.Every(1).Weeks().FirstDayOfWeek(DayOfWeek.Monday).OnDays(Day.MONDAY).Build().Next(localLastKnownDateTime).Value;

        Console.WriteLine(newDate);

    }

}