|
|
 |
|
|
|
 Random ecard |
|
Computer bug
|
|
| Registered users |
|
HELP THIS SITE STAY FREE! DONATIONS
|
|
|
Animals ecards
Anniversary ecards
By & Large ecards
Baby ecards
Birthday ecards
Funny photos
Just Because ecards
Boss's Day ecards
Boss's Day ecards
China's New Year ecards
Citizen's Day ecards
Columbus Day ecards
Dogs ecards
Easter ecards
Family ecards
Friends ecards
Good Luck ecards
Graduation Day ecards
Get Well Soon ecards
Hello ecards
Humor Ecards
Keep in Touch ecards
Kids ecards
Love Ecards
Miss You ecards
Happy New Year ecards
Season's Greetings ecards
Smoke Out Day ecards
I Am Sorry ecards
Thank You ecards
Valentine's Day ecards
Merry Christmas ecards
Special selection of Holidays
|
|
|
| Daylight Savings Time wait sun |
| Description: |
One of the major reasons given for observing DST is energy conservation. Theoretically, the amount of residential electricity needed in the evening hours is dependent both on when the sun sets and when people go to bed. Because people tend to observe the same bedtime year-round, by artificially moving sunset one hour later, the amount of energy used is theoretically reduced. United States Department of Transportation studies showed that DST reduces the country's electricity usage by one percent while DST is in effect.
Part of the reason that it is normally observed in the late spring, summer, and early autumn is because during the winter months the amount of energy saved by moving sunset one hour later is negated by the increased need for morning lighting by moving sunrise by the same amount. During the summer most people would wake up after the sun rises, regardless of whether daylight saving time is in effect or not, so there is no increased need for morning lighting to offset the afternoon energy savings.
Another perceived benefit of DST is increased opportunities for outdoor activities. Most people plan outdoor activities during the increased hours of sunlight. Other benefits cited include prevention of traffic injuries (by allowing more people to return home from work or school in daylight), and crime reduction (by reducing people's risk of being targets of crimes that are more common in dark areas).
When the U.S. went on extended DST in 1974 and 1975 in response to the 1973 energy crisis, Department of Transportation studies found that observing DST in March and April saved 10,000 barrels of oil a day, and prevented about 2,000 traffic injuries and 50 fatalities saving about U.S. $28 million in traffic costs. |
| Keywords: |
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
|
|
|
|
