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November 02, 2007

Daylight Stubbornness Time

The Wall Street Journal has an article today looking over the evidence casting doubt on the assertion that our extended Daylight Saving Time season actually saved any energy. It also reports that there's no set date for the Department of Energy to issue an evaluation of the policy, as required by the statute. I can't wait.

Meanwhile, Doug Masson found one article that explains at length why DST results in no actual energy savings; interesting that a county reporter from Wisconsin can come up with a more thoughtful critique of a policy than two co-sponsoring congressmen. He also found a story about a German study showing that our internal body clocks don't fully adjust to the switch.

UPDATE: It seems that as our extended DST comes to a close, more and more people are noticing that it wasn't worth the effort. Free Exchange nods to the emerging consensus. They also link to a New York Times op-ed by anti-DST scourge Michael Downing, who claims that daylight saving is really just a sop to a few interested industries, like the candy lobby.

Previously by the author:

"Do Time Bombs Honor DST?"
"DST = Gas Guzzling"
"Daylight Stupidity Time"
"Evening Power Usage Time"
"Morning Darkness Saving Time"
"A Bad Plan for Indiana"
"DST and Broken Hearts"
"No, This is NOT Happening"
"Grrrrr"

Posted by Zach Wendling at November 2, 2007 12:13 PM

Comments

I don't know what Reardon was trying to say about Indiana in the winter, though. Indiana's hours in the winter are numbered the same now that we have Daylight Saving Time as they were when we didn't. It is the numbering on our summer (March - November) hours that is different, now. Maybe he was trying to claim that if we had had Daylight Saving Time, we might have also switched to the Central Time Zone (in order to have a reasonable sunset time in the summer), which would have made our "8:30" lighter. (It would also be getting dark by 4:00 PM.)

Posted by: Karl at November 2, 2007 06:05 PM | permalink

I wish Daylight Savings Time and its biannual infliction of jetlag on the population would just go.

Posted by: Alan K. Henderson at November 3, 2007 12:36 AM | permalink

From the article describing the German study:
The circadian clock does not change to the social change," Roenneberg said. "During the winter, there is a beautiful tracking of dawn in human sleep behavior, which is completely and immediately interrupted when daylight savings time is introduced in March," he said. It returns to normal this year when standard time returns on Nov. 4, he added.

This makes no sense, unless latitude is specified. Daylight savings or not, at high latitudes in winter, most people will rise long before dawn and go to bed long after sunset. Before DST ended last week, I got up in the dark. This morning, I still got up in the dark, and I'll continue getting up in the dark until sometime late in the Spring.

o, it's not surprising that daylight savings time affects our internal clock, Ptacek said. However, it is no more unnatural than our use of artificial light, he noted.

Yeah, anyone who is worried about the effect of DST on their circadian rhythm should probably take the bulbs out of all their light fixtures.

Stupid EST. This evening, it will be dark when I get home, so I won't be able to work outside. Last week, I had a good hour of light in the evening.

Posted by: Nick at November 5, 2007 10:25 AM | permalink

Stupid EST. This evening, it will be dark when I get home, so I won't be able to work outside. Last week, I had a good hour of light in the evening.

I find that I concur heavily, I like the extra light in the evening. I would support just switching the US back one hour permanently.

For this to be acceptable I should point out that I put zero credence in the youth waiting outside for school in the dark arguement. I was waiting in the dark for my bus for many years in my childhood. The only thing that made it go away was the procurement of a car and a drivers license.

Posted by: Foltz at November 5, 2007 03:06 PM | permalink

Who doesn't like more light in the evening? If we didn't have DST, it would be light at 3:30AM and dark at 8:30PM in the summer. What part of having the light part of the day correspond to human activity do people object to? Or are there lots of people who desire to wake up at 3:30 to catch the first rays of morning sunshine?

Wouldn't you rather be able to continue to come home and play a round of golf after work in the summer?

Posted by: Minturn at November 5, 2007 03:52 PM | permalink

It doesn't sound to me as though you have seriously considered the objections to Daylight Saving Time. I do not think that one of the main supposed benefits of DST is the reason why most of the people who object to it do (though I do know of parents who have found it difficult to make their kids go to sleep before dark, and it has been bad for Independence Day celebrations in Indiana...). I'm not sure that DST even does align daylight with human activity, as you say. For the parts of the summer in which daylight was ever "lost," daylight was plentiful, and did not need to be saved. I also do not know where you live that it would have been light at 3:30 AM in the summer without DST. I am from Indianapolis, and it was never light at 3:30 AM at any point in the summer, there, before DST. It began to get light a little before 5 AM for a couple of weeks, but only briefly. People were already able to "play a round of golf" after work in the summer.

Posted by: Karl at November 7, 2007 07:37 AM | permalink

 
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