Clever cat that is

Casper and Kitty (but esp. Casper) has a sence of time. My husband comes home for lunch at 12:30 and few minutes before that, Casper starts meowing, like telling to me that daddy is on his way home.
Same is then when he finishes work, that's 17:30. Then Casper gets really cute, he goes next to the (out going) door and meows and looks at me. When I hear my husband on the stairs, I open the door and let Casper run to say hi to daddy.