I think if you were to plot the times where Simon gets up and goes to be, you'd see a very (very) slight upward trend over the last few months. But even then, 6:30 to bed and 6 to rise sucks because I don't get to spend much time with him after work, and Diana has to get up early. Lately, we've had some successful down at 7, up at 6:30 cycles, but they're still inconsistent.
So you can imagine that we've actually been looking forward to the "spring ahead" time change, in the hope that we could move him along. This morning he got up at 7:30 or so, but we really had to push him to keep his afternoon nap starting later. We're crossing our fingers for a him to wake up at 5, and keep him up until 8. It will be a win all around if he can conform.
You would think that because he doesn't tell time, that he'd fall in line based strictly on daylight, but he seems to take cues from us or something. In Orlando, he managed to adapt fairly well to the time zone change, and he seemed to stay a little closer to Pacific time, though definitely not the full three hours.
Sometimes I feel bad that we're trying to manipulate him into a schedule that's more convenient for us, but we're certainly not denying him necessary sleep or anything. We're not pissing him off either (he does that on his own when he doesn't get his way in terms of help sitting/standing).