Brighton parking

Is there some sort of trick I’m not aware of with the timed release of parking reservations for Brighton? I have a paid reservation for tomorrow, luckily, but was hoping to get a passholder parking spot for tomorrow so I didn’t have to pay for parking. I got on at 7:59 this morning and just before 2 pm today and I can’t tell that they release any extra parking like they say they do. It’s really frustrating.