Re: [Boost-users] timezone database discrepancy

Subject: Re: [Boost-users] timezone database discrepancy
From: John Wilkinson (jwilkinson_at_[hidden])
Date: 2010-10-05 15:34:18

> I found discrepancy between results of the calculation
> for "America/Chicago" region and published data.
> 
> for years 2010-2007 the results match.
> However, for the 2006 calendar year, published results from several
> sources
> are:
> Start: April 2 End: October 29
> and calculated results are:
> Start: March 12 End November 5

The calculated dates are correct.  The United States changed the rules in 2007 (to start the second Sunday in March and end the first Sunday in November):  http://en.wikipedia.org/wiki/Energy_Policy_Act_of_2005#Change_to_daylight_saving_time

John
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