I have an AP Access Rule with a time constraint, and it works great if the client is not connected. However if they are already connected then when the time comes the client remains connected. If they drop off and try to then come back it works properly.

Can you post the config? You're talking /interface wireless access-list correct?

Anyway if you have an Access List allowing access at certain times, you also need a complementary rule disallowing access at other times.

Yes the wireless access point. I dont know how to use the command line very well. I use the GUI for most everything. Could you please tell me what I exactly you would like to see and what to enter to get that info?

I am wondering if its because I have 2 rules. One from 00:00 to 08:00 and a 2nd on from 21:00 to 23:59

But as I said it works if the client drop the connection and then it wont let them back on again so I would guess its setup right?

Thanks for the the help!

Open a New Terminal from winbox or webfig and type:
That will print out the configuration. Much easier than trying to describe it.

/interface wireless access-list
add authentication=no forwarding=no interface=ISMH mac-address=\
E8:2A:EA:B6:05:F8 time=\
0s-9h,sun,mon,tue,wed,thu,fri,sat
add authentication=no forwarding=no interface=ISMH mac-address=\
E8:2A:EA:B6:05:F8 time=\
22h10m-23h50m,sun,mon,tue,wed,thu,fri,sat

I just tried it and it seems to work.
I added the above 2 rules. It was 23:47, all 3 of my iPads can be seen in /interface wireless registration-table.

As soon as the time changed to 23:50, all 3 devices were disconnected.

Let's see what happens at 00:00. 4 more mins to go.

OK, they didn't come back but i think they connected to my other AP. Will have to test again.

I suggest you add both off and on ACLs to cover the entire 24hr period.