'NYT': Extra Hour of Daylight for Halloween Due to Candy Lobby?:
"But it gets even stranger than that. The candy lobby also played a significant role in pushing Halloween into daylight saving time, believing that extra hour of trick-or-treating in daylight would spur more candy sales but arguing that it would decrease deaths, according to Michael Downing, the author of 'Spring Forward: The Annual Madness of Daylight Saving Time,' an amusing book about the myths and realities behind daylight saving time. "

But who goes trick-or-treating in daylight? All the kids/families I know of wait until dark to begin their rounds. Extending DST just makes them have to start an hour later than otherwise. It's more inconvenient.

via Robot Wisdom