Comparing Date Without Year in PHP

It is not necessary to compare years. A date can consist simply of a month and a day:

php<?php
  $date1 = '12-01';
  $date2 = '11-01';
  
  var_dump($date1 > $date2);
?>

Задание 1

Write code that will compare the two dates below and output a message about which one is greater:

php<?php
  $date1 = '09-21';
  $date2 = '09-23';
?>