I know our cats have US trained! And if we're late with the meal, or getting up in the morning to GET the meal, we hear about it! Or going to bed at night. We have a very pushy, bossy-boots bunch.
I’m always amazed at how well they can tell time. Even when we switch to/from daylight savings time it only takes them a couple days to readjust. I don’t mind the weekday 4am wakeup call (I get up for work at 4:30am anyway), I just wish I could teach them the concept of SATURDAY!
I’m glad mine’s not the only one. Around 10:30 she starts screeching about it being her bed time and she’ll allow me to pet her if I go then.