获取生日提醒Linq Query无视年份

var birthdays = new List<DateTime> {
    new DateTime(2022, 1, 1),
    new DateTime(2022, 2, 1),
    new DateTime(2022, 3, 1),
    new DateTime(2022, 4, 1),
    new DateTime(2022, 5, 1),
    new DateTime(2022, 6, 1),
    new DateTime(2022, 7, 1),
    new DateTime(2022, 8, 1),
    new DateTime(2022, 9, 1),
    new DateTime(2022, 10, 1),
    new DateTime(2022, 11, 1),
    new DateTime(2022, 12, 1),
};

var today = DateTime.Today;
var currentMonth = today.Month;

var birthdaysThisMonth = birthdays
    .Where(birthday => birthday.Month == currentMonth)
    .OrderBy(birthday => birthday.Day)
    .Select(birthday => birthday.Day);

foreach (var day in birthdaysThisMonth) {
    Console.WriteLine($"生日提醒：本月 {day} 日有生日");
}