sleep time check

test.php

public function carbonTest()
  {
    $tz = 'UTC';

    $asia = 'Asia/Calcutta';
    
    date_default_timezone_set($tz);

    // $currentTime = carbon()->now()->tz($asia)->format('H:i:s');
    $currentTime = '21:01:00';
    $currentTime = date('H:i:s', strtotime($currentTime));

    $nine  = date('H:i:s', strtotime('21:00:00'));
    $elev  = date('H:i:s', strtotime('23:59:59'));
    $twe   = date('H:i:s', strtotime('00:00:01'));
    $three = date('H:i:s', strtotime('03:00:00'));
    if($currentTime > $twe && $currentTime < $three){
      echo "Sleep Time 1";
    }
    else  if($currentTime > $three && $currentTime < $nine){
      echo "No Sleep TIme 2";
    }
    else if($currentTime>=$nine && $currentTime <= $elev)
    {
      echo " Sleep Time 3";
    }
    else
    {
      echo "No Sleep Time  4";
    }

    
   
    // dd($currentTime);
  }