using System;
using System.Globalization;
public class Program
{
public static void Main()
CultureInfo cul = CultureInfo.CurrentCulture;
int NumeroSemana = cul.Calendar.GetWeekOfYear(
new DateTime(2023,10, 15),
CalendarWeekRule.FirstDay,
DayOfWeek.Monday);
Console.WriteLine(NumeroSemana);
}