Daylight saving: Is it finally time to convert?

Now the government is once again considering adopting the Western concept of daylight saving time.

But will setting the clock forward an hour cure the summertime blues? Here are some questions and answers on the issue:

How hot can Tokyo get?

Too hot. Surviving the humid summer can be strenuous even with ample electricity and the air conditioner cranked up full. While Tokyo's average high in August was 27.7 degrees between 2008 and 2010, just last week areas around Tokyo shot up to the 39-degree range.

According to the Meteorological Agency, temperatures in the capital last year were above 30 degrees for 71 days and over 35 on 13 days, with the humidity sometimes exceeding 80 percent. Both exacted a toll: 4,245 Tokyoites were taken to hospitals last summer for heat exhaustion.

It was the hottest summer on record.

Can Tokyo Electric Power Co. provide enough electricity?

No. Tepco's Fukushima No. 1 nuclear plant remains crippled and some of its thermal power plants are off line as well because of damage from the March 11 quake and tsunami.

Tepco is expected to generate 53.8 million kw this summer, but demand will probably exceed 60 million kw.

How can daylight saving time help?

Tokyo has approximately 14 1/2 hours of daylight in summer compared with nine hours and 40 minutes in winter. Daylight saving time focuses on making better use of daylight hours to reduce the use of lights at night to save energy.

By setting the clock forward an hour in the summer, people wake up an hour earlier, when the sun is already out. This means electricity use at night should drop, assuming workers go home while it's still light out.

The Environment Ministry said the power saved as a result of daylight saving time would translate into an annual reduction in carbon dioxide emissions of 1.19 million tons.

Has Japan tried it before?

Yes. During the Allied Occupation, the nation spent four summers between 1948 and 1951 on daylight saving time. After the "Sanmaa-Taimu" (Summer-Time) law took effect in May 1948 it got mixed reviews from the public.

Daylight Savings Time 2009 - News


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KB18608-Daylight Savings Time – Bangladesh 2009/2010

The Bangladesh goverment announced on June 2, 2009 that Bangladesh will begin to observe Daylight Savings Time (DST) on June 19, 2009 at 23:00 where the time will be moved ahead one hour. The Banglasdesh goverment has announced that DST will now end on December 31, 2009.

Update: On March 22, 2010 the Bangladesh goverment announced that DST will not be observed in 2010.

For BlackBerry® smartphone users currently residing in or traveling to Bangladesh it is recommended that they set their BlackBerry smartphone to the Bangkok (+7) timezone.

For BlackBerry smartphone users who are interacting with BlackBerry smartphone users in Bangladesh it is recommended that when creating a calendar event they set the timezone to Bangkok (+7).

Single meeting instances and reoccurring meetings that start on or after June 19, 2009 may need to be manually adjusted to accommodate this change as the GMT offset has changed. BlackBerry smartphone users can manually change the times of the appointments in the BlackBerry smartphone Calendar to reflect the correct time by recreating the appointments using the Bangkok (+7) timezone.

With the end of Daylight Savings Time users who have changed their BlackBerry to Bangkok (+7) will need to manually change to the Astana (+6) timezone.


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Daylight Savings Time 2009 - Bookshelf

Time, from Earth rotation to atomic physics

Time, from Earth rotation to atomic physics

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Encyclopædia Britannica Almanac 2009

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