Engineering News Blog

Engineering News

Latest news of interest to engineers. Sourced from GlobalSpec's Engineering News

Previous in Blog: New Look for Solar Cells   Next in Blog: Biofuels: An advisable strategy?
Close
Close
Close
5 comments
Rate Comments: Nested

How Daylight-Saving Time Works

Posted March 07, 2007 12:53 PM

From HowStuffWorks: Daily Stuff Feed:

In the United States, traditionally, daylight-saving time has started on the first Sunday in April and ended on the last Sunday in October. However, the Energy Policy Act of 2005 mandated a change to the observed dates. Starting in 2007 and going forward, DST will now begin at 2 a.m. on the second Sunday of March and will end at 2 a.m. on the first Sunday in November.

Read the whole article

Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Power-User
Hobbies - Model Rocketry - New Member

Join Date: Nov 2006
Location: Freedom, Indiana
Posts: 340
#1

Re: How Daylight-Saving Time Works

03/08/2007 8:07 AM

You know, ol' Ben Franklin was JOKING when he proposed DST! Read "An Economical Project" sometime; it's hilarious.

Sure, he talked about setting clocks back. He also proposed firing cannons in the street, and taxing window shades and candle wax, to wake up the lazy Frenchmen (and certain American ambassadors) who played chess 'til midnight and slept 'til noon.

__________________
Give me Liberty, or give me my Money Back!
Reply
Power-User

Join Date: Jan 2007
Posts: 126
Good Answers: 1
#3
In reply to #1

Re: How Daylight-Saving Time Works

03/08/2007 5:08 PM

I've heard various reasons for "daylight saving" time, over the years, including: It was started by the farmers so they could have more light and ; it was started to give the school children more light in the morning to catch the bus but I've never heard the WWI reason or the current rationale for saving energy. As far as I can tell, none of them make any sense. In fact I sense there is some other reason that hasn't surfaced yet or that the policy makers are like sheep and just go along with it without analyzing or questions the motives of the ones pushing the idea. Since, none of these reasons make any sense, someone please give me one that does. I think it's the most ridiculous ritual we have. People aren't going to have any more sunlight in the summer by starting one hour later. The daylight exposure range in expanded in the summer, thus starts earlier and ends later--so what! Starting an hour later actually reduces the amount of daylight by one hour. It should be called "daylight losing" time.

__________________
goosemydog
Reply
Anonymous Poster
#4
In reply to #3

Re: How Daylight-Saving Time Works

03/09/2007 2:40 PM

Well, the Kaiser Wilhelm Germans were the first to start with this bienniel clock fetish, and their rationale was to save energy/resources and maximize the use of natural light.

OK, so why don't change the hours you do things and leave the clocks alone?

That's actually the question of the day. Why don't we just have winter/summer hours instead of going through the stupid self-deception of changing clocks?

Reply
Power-User

Join Date: Jan 2007
Posts: 126
Good Answers: 1
#5
In reply to #4

Re: How Daylight-Saving Time Works

03/09/2007 4:45 PM

If the Kaiser was doing this in the spring and summer, again, I don't get how he thought he was saving any energy. Like I said, the light range is broader--earlier sun and later sun. Where would the energy savings be in eliminating an hour of light in the am and another in the pm? It seems to me that energy could be saved by eliminating an hour in the am and pm during the fall and winter monthes, if at any time, due to the reduction in light hour range--unless you live near the equator where it wouldn't make any difference. This would give us northerners a 6 hour work day. Now, wouldn't that make more sense?

__________________
goosemydog
Reply
Power-User

Join Date: Jan 2006
Posts: 377
Good Answers: 2
#2

Re: How Daylight-Saving Time Works

03/08/2007 8:22 AM

Many people might want to turn off the automatic time adjustment on their computers if they are not sure they have all there Windows updates and set their computer date/time manually at bedtime on 3-10 in the US.

Reply
Reply to Blog Entry 5 comments
Copy to Clipboard

Users who posted comments:

andyhorning (1); Anonymous Poster (1); electrone (1); goosemydog (2)

Previous in Blog: New Look for Solar Cells   Next in Blog: Biofuels: An advisable strategy?

Advertisement