How many hours a day do cats sleep?

Okay, so around 11 this morning I asked to go outside to...um well you know.  I will not lower myself to climbing into a box and *** unless absolutely necessary!  I have standards and morals or something. Anyway, all appeared pretty normal for an hour before lunch - most of my brofurs and sisfurs were still sleepy eyed, not yet fired up for the day. 

Outside, the weather is brisk, but not too bad with my fur coat on - about 41 degrees.  So I meander through the woods and check for wayward cats - this is MY territory and I do monitor it very closely.  (Remember I am known as "ferocious") But I see no foolish cats today and no sun, so I only stay out for a couple of hours.  Upon my return I find this:

Okay so can someone tell me why Snoopy has to lay ON the cat pillow?  Is the chair not soft enough?  Geez, don't let Mom know - this is her chair and she thinks it's just fine.  The pillow however, must be heavenly.  I mean he can barely keep his eyes open for the photo?!?  He is seriously snoozing so I ask Crickett, 'how long has he been up there?'  Crickett doesn't know, he forgot to put his watch on this morning and his internal clock only works for snack time.   Well I suppose it's not that important as cats are known for sleeping about 16 hours a day.  Well let me tell you - obviously Snoopy is fully aware of this and I guess he's trying to prove it.  Here it is almost 11 PM and well, see for yourself....

Amazing really - how does he keep it all on that little pillow???  He's wearing me out just looking at him - think I'd better go take a nap.  Mom's going out in the studio to make something with paper.  And well I much prefer something with fabric to tear up so might as well....at least for a few hours.  I hope everyone sleeps tonight as well as Snoopy did today!