Our Corgis aren't on a distinct schedule anymore. Last year I had a teaching job (my position was cut this year due to budget cuts) that had a consistent schedule so they would go outside around ten and sleep until 6:30-7:00. I didn't realize how well Corgis could tell "time" until my dad and his fiance baby sat our dogs while we were in Florida. My dogs got them up every morning at almost exactly 7 AM.
Now they go to bed any where between 9:30 and 11:00, depending on my new schedule. They continued wanting to get up at 7, even with the later times, but now they are slowly waiting longer. One morning they even let me sleep until 8:30!
My guys are up with the sun -- so earlier in the summer, later in the winter -- and it doesn't matter what time I let them out for a last quick pee at night. Sometimes, my job hours are 4 pm to midnight -- and I let them out when I finish work, we all hop into our beds around 1 AM, and low and behold, around 5 AM in the summer, 6 in the winter, I feel 2 sets of deep brown eyes boring holes in my skull (no sound, no whining or barking -- just staring, powerful powerful staring). So we get up, they do a quick run outside, have some kibbles, then we all go back to bed. But they aren't spoiled or anything!
But here's a funny thing. My guest room is upstairs on the second floor (my room is on the ground floor). If someone is visiting, Ethel very nicely lets them sleep until 7:30 AM, then she sits at the bottom of the stairs and barks a few times. If she doesn't hear them stirring, she zips up the stairs and starts hopping around the guest room until they get up. I have no idea how she knows when 7:30 is, but that's the time she's determined is the ideal time for guests to get up. Needless to say, anyone who stays at my house has to understand who's in charge....and it's not me.