That's a fair enough statement. I meant to say in Australia only, not the world, but my question is a little ambiguous so I'll give you that
I've decided to work this out in layman's terms i.e. a rough estimation.
Based on the following:
It appears that the curvature of the earth results in a drop of 8 inches every 1 mile. I live in Australia, so I'm more comfortable with metric which equates to 20 cm over 1.6 km
Using Google Earth with the two points visible on my screen and a ruler, I have estimated that these two locations are approximately 85 km apart in LONGITUDE.
So over 85km, the math equals 85 / 1.6 x 20 = 106.25 meters drop due to the earth's curvature
Due to the tangent of line of sight, this figure needs to be doubled, so 212.50m
So which receives light first?
Mt. Warning (1,156 m or 3,793 ft)
Point Lookout (1,564 m or 5,131 ft)
With an elevation difference of 408 metres, even with time of year differences, Point Lookout is clearly the first point of Australia to receive sunlight each day! So there you go, a common misconception down here in oz.
p.s. the other math in the link is beyond me, but close enough I think. The difference in elevation is pretty big.