<p>On second thought, I would call today, and if you can’t get in touch with them I would send an email with the essay today. They might not take it but waiting until tomorrow would really reduce your chance of them accepting the essay because of the deadline at midnight tonight.</p>
<p>Yes, I realize that they are probably closed today. That is why I suggested that you send the essay in an email today if you can’t get in touch with anyone. I think that they will probably believe that it is unfair to the rest and the process to accept your essay after the deadline.</p>