Daylight Savings time Changes
Saturday, March 10 2007 @ 02:12 AM Eastern Standard Time
Contributed by: Michael Brusletten
Views: 2,109
Daylight Savings time Changes
Beginning in 2007, most of the United States
begins Daylight Saving Time at 2:00 a.m. on the second Sunday in March and
reverts to standard time on the first Sunday in November. In the U.S.,
each time zone switches at a different time.
In the European Union, Summer Time begins and ends at 1:00 a.m. Universal Time (Greenwich Mean Time). It begins the last Sunday in March and ends the last Sunday in October. In the EU, all time zones change at the same moment.
Spring forward, Fall back
During DST, clocks are turned forward an hour,
effectively moving an hour of daylight from the morning to the evening.
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| Year | DST Begins at 2 a.m. |
DST Ends at 2 a.m. |
Summertime period begins at 1 a.m. UT |
Summertime period ends at 1 a.m. UT |
| 2003 | April 6 | October 26 | March 30 | October 26 |
| 2004 | April 4 | October 31 | March 28 | October 31 |
| 2005 | April 3 | October 30 | March 27 | October 30 |
| 2006 | April 2 | October 29 | March 26 | October 29 |
| 2007 | March 11 | November 4 | March 25 | October 28 |
| 2008 | March 9 | November 2 | March 30 | October 26 |
| 2009 | March 8 | November 1 | March 29 | October 25 |
Date change in 2007
On August 8, 2005, President George W. Bush signed the Energy Policy Act of 2005. This Act changed the time change dates for Daylight Saving Time in the U.S. Beginning in 2007, DST will begin on the second Sunday in March and end the first Sunday in November. The Secretary of Energy will report the impact of this change to Congress. Congress retains the right to resume the 2005 Daylight Saving Time schedule once the Department of Energy study is complete.
When in the morning?
In the U.S., clocks change at 2:00 a.m. local time. In spring, clocks spring forward from 1:59 a.m. to 3:00 a.m.; in fall, clocks fall back from 1:59 a.m. to 1:00 a.m. In the EU, clocks change at 1:00 a.m. Universal Time. In spring, clocks spring forward from 12:59 a.m. to 2:00 a.m.; in fall, clocks fall back from 1:59 a.m. to 1:00 a.m.
In the U.S., restaurants and bars have various closing policies. In many states, liquor cannot be served after 2:00 a.m. But at 2:00 a.m. in the fall, the time switches back one hour. So, can they serve alcohol for that additional hour in October? The official answer is that the bars do not stop serving liquor at 2:00 a.m., but actually at 1:59 a.m. So, they have already stopped serving when the time changes from Daylight Saving Time into Standard Time. In practice, however, many establishments stay open an extra hour in the fall.
In the U.S., 2:00 a.m. was originally chosen as the changeover time because it was practical and minimized disruption. Most people were at home and this was the time when the fewest trains were running. It is late enough to minimally affect bars and restaurants, and it prevents the day from switching to yesterday, which would be confusing. It is early enough that the entire continental U.S. switches by daybreak, and the changeover occurs before most early shift workers and early churchgoers are affected.Some U.S. areas
For the U.S. and its territories, Daylight Saving Time is NOT observed in Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands, and Arizona . The Navajo Nation participates in the Daylight Saving Time policy, even in Arizona, due to its large size and location in three states.
To get more information please goto:
Daylight Saving Time Help and Support
There you will have the opportunity to select your Microsoft OS type and how to update your settings. Alternatively you can download their time zone tool from here for quick and easy changing of the settings.
Use the procedure below to update your Windows 2000 system. NOTE Windows Me and earlier versions are no longer supported and Microsoft is not providing daylight saving time updates for these products. For more information, visit Microsoft Support Lifecycle.Step 1: Download and install the Windows Time Zone Editor (Tzedit.exe).
- At the bottom of this page, click Download to download Tzedit.exe.
- Save the Tzedit.exe file to a folder on your computer, and then double-click the file to run it.
- In the WinZip Self-Extractor – tzedit.exe dialog box, click Unzip to extract the files to the Program Files\TZEdit folder.
Step 2: Run Windows Time Zone Editor and set the daylight saving time dates for your time zone.
- Click Start, click Run, type %programfiles%\tzedit\tzedit.exe, and then click OK.
- In Windows Time Zone Editor, click to
select your time zone in the Time Zones list, and
then click Edit.
For example, click (GMT-08:00) Pacific Time (US & Canada); Tijuana, and then click Edit. - In the Edit Time Zone dialog box, select the Automatically set Daylight Saving Time check box.
- In the Start Day row, click to select Second, click to select Sunday, click to select March, and then click to select 2:00:00 am.
- In the Last Day row, click to select First, click to select Sunday,, click to select November, and then click to select 2:00:00 am.
- To set the daylight saving time dates for another time zone in the United States, select the other time zone, and then repeat the previous two steps.
- Click OK.
Step 3: Apply the daylight saving time date changes to Windows.
- Click Start, click Run, type timedate.cpl, and then click OK.
- In the Date and Time Properties dialog box, click the Time Zone tab.
- Click to select a different time zone than the one you updated in Step 2, and then click Apply.
- Click the time zone that you updated in Step 2, and then click OK.
click Download to download Tzedit.exe


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