Calling API every 24hr period with PHP

I have my API call that retrieves the information I need to pull data onto my site

However, the API call needs to be called every 24hrs but I cannot use cron

Does anyone have an idea on how I can maybe do this with PHP or perhaps JS?

Here's my (simplified) call:

$postdata = http_build_query(
    array(
    'username' => 'user',
    'password'=>'pass'
));

/* API URL */
$url = ' *my_api_url_here* ';
  
$ch = curl_init($url);
  
curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata);
  
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type:application/json'));
  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$result = curl_exec($ch);
echo json_encode($result);

curl_close($ch);