A Very Justifiable Complaint

At least the guy answering the Jerusalem Municipality hotline didn't laugh at me when I called in about 7:07am yesterday morning.  I have no doubt that my call is on his list of funniest calls ever.  Imagine how I must have sounded to him.  A lady's voice with a very heavy American accent complaining that the public toilets at Gan Hapa'amon, Liberty Bell Park weren't open, even though the sign very clearly stated that the opening time is 7am:

There is a mistake in the sign, but not in terms of the opening time.  If you know what the mistake is, please say what it is in the comments.

Just in case you're curious, the man who works there opened the door as I was talking to the hotline.  I dashed in, and when I finished, he asked me if I had called.  That hotline is very efficient.  As soon as I got off the phone, he got a call from the operator asking where he was and why the 00, WC, wasn't open on time.  I told him that I had just traveled a long distance, which was very true.  At my age, I take my public toilets very seriously.