Q. I think my fifteen year old cat might have non agressive rabies it's 4:52 am here and it's a Sunday the vets here are not open
A. What makes you think that? If it's an indoor-outdoor cat who isn't up to date on rabies vaccination, it's possible, but there are a lot of other reasons that cats show neurological signs, too. Is there an emergency vet within driving distance? If you open a consultation I can try to help you find one. If not, put the cat in a separate room with food, water, and litter box until you can call the vet on Monday morning.