When is a good day to go there and what time do they open

I agree with Donna. The earlier the better. Be prepare to wait for at least 2 hour wait. They don't officially start seeing animals till 10 am but if you get there by 8am you should be out by 11am noon at the latest. But worth the wait.

Currently closed due to outbreak of kennel cough

It's always very busy, try to be there when they first open. I think the clinic opens at 10am.

It opens at 9am. Its really busy on Saturday. If you are going there to see a vet, early during the week day is the time to go but its always busy. If your going there to adopt anytime is good. They will have you fill out some paperwork before you view the animals.