No, go and look up the definitions yourself. Understand what those things are. I pasted a big blue diagram above already. Its not hard.
Get two nice straight garden canes and a sunny day.
Push one garden cane into the soil such that it has no visible shadow (pointing at the sun)
Wait 1 hour.
Push the second cane into the soil such that it crosses the other one and has no visible shadow (pointing at the sun)
Measure the angle between the canes. It will be 15 degrees. If you prefer, wait two hours - it'll be 30 degrees. Or three hours - it'll be 45 degrees. It doesn't matter where you are on earth, and so long as the sun is visible and not covered with clouds at both ends of the experiment, it doesn't matter when you do it either.
The timings you are talking about, with the aid of your excellent diagram, are degrees measured vertically above the horizon,
not the angle across the sky the sun appears to travel during a given time.
As for the sundial: you are quite correct that angled fins distort the path of the shadow. As I mentioned earlier: the other type of sundial, which is angled to align with the polar axis and thus present an undistorted shadow projection, has the hours spaced 15 degrees apart.