-> Remember to set your clocks forward one hour on Sunday, March 11. The starti 
-> and ending dates of Daylight Saving Time (DST) changed this year as a result 
-> the Energy Policy Act of 2005. DST now begins on the second Sunday in March  
-> ends on the first Sunday in November. Visit USA.gov [ 
  
This is experimental. If the energy savings turn out to be slight, or 
if there are other problems (such as an increased number of road 
accidents during the morning rush, which will now be partly in 
darkness), the change will be reversed next year or the one after. 
  
Back in the 1970s, the US kept Daylight Saving Time year-round for a 
year or two. A large increase in morning accidents occurred, so the 
change was abandoned. This latest experiment is a compromise. We'll 
see... 
  
I wrote a few lines of BASIC, a few months ago, to calculate the dates 
of the time-changes according to this new rule. If anyone's interested, 
here it is. 
  
                       dow 
  
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' DSTDATE.BAS 
' Calculates start and end dates of Daylight Saving Time 
' David Williams, 2002 
' Modified for new DST rules, 2006 
' david.williams{at}ablelink.org 
  
DEFINT A-Z 
CLS 
INPUT "Year"; Y 
IF Y < 2007 THEN BEEP: PRINT "Not valid before 2007": END 
B = 7 - (2 + Y + Y \ 4 - Y \ 100 + Y \ 400) MOD 7 
PRINT "In most of North America, in the year"; STR$(Y); 
PRINT ", clocks are set ahead on March"; STR$(7 + B); "," 
PRINT "and back on November"; STR$(B); 
PRINT ". Both dates are Sundays." 
END 
  
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