It's quite amazing that cats seem to know what day it is and expect you to do your usual routine together. My cat Bitty knows when it's time for me to go home and if I'm not there on time, he makes a loud fuss. By the time I get home, he would usually treat me like I'm not there. Sundays are our favorite time together. We wake up together, usually late in the morning. If I don't have breakfast, he won't have breakfast. But on regular days, he would wake up early and wait for his meal. And he expects me to be there with him the whole day. He follows me from room to room and when it's time for our nap, he would lead the way upstairs. But on Sundays when I have to do errands, he really gets upset. He knows when it's a workday and when it's a weekend.
Bitty is a blind kitty, maybe that's why he's a little more sensitive than our other cats. When I have to pack for a business trip, he's the first one to get in the luggage. I have to be quick because he's going to pee, naughty kitty that he is :-). Packing is a tiring business, I have to put all the clothes in and get all the cats out. When I get back, he gives me the silent treatment. But he's back to his sweet self when we retire for the night. It's hard to get up in the mornings because he would be wrapped around my arm, sleeping soundly.