I think people are more aware of daylight savings time than you imagine, given the nagging by the media on how to adjust their clocks.
I am afraid this is a very US-centric view.
If I'm not mistaken, Stewart is Australian. So it's a very AUS- centric view ;-)
Try to explain the concept to someone from a country that does not mess with the clocks.
Heh. Try explaining the concept to 99.9% of humanity ;-) I live near farm country. Every year, when DST ends in late fall, there are "letters to the editor" complaining that the late crops really _need_ more sunlight - why can't the damn fool city-slicker politicians just leave the sun alone, as God created it?