How Do They Know?

I came home from work a little early today, as I was planning to take my cats in to get their vaccines up to date. The animal hospital I use has walk-in vaccination from 8-6:30 every day.

Somehow, my male cat figured this out as I was walking in the front door, and is now hiding under the couch. I expect him to come out around 6:25.

Oh well. I guess that means I get up early tomorrow morning.