[tz] Chile goes back to DST (...)

Paul Eggert eggert at cs.ucla.edu
Fri Mar 18 18:10:32 UTC 2016

Thanks for the information. From the wording in the new decree, it 
appears that Chile will change its practice this year for Easter Island 
Time (Hora Oficial de Chile Insular Occidental), as described below. I 
wonder: is this correct?

In 2008, as documented in 
Chile kept Easter Island Time two hours behind mainland time: when the 
mainland switched at 24:00 local time, Easter Island switched at 22:00 
local time. This is the practice in the European Union.

In contrast, this week's decree says that mainland and Easter Island 
both switch at 24:00 local time, which means the mainland will switch 
two hours before Easter Island does. This is the practice in North America.

Has the practice really changed in Chile, and if so, do you know which 
year the new practice was introduced?

I don't speak Spanish natively and so could be misreading the decree; 
comments are welcome. In the meantime a, proposed further patch to 
tzdata is attached and is installed in the experimental tzdata version 
on GitHub <https://github.com/eggert/tz>; this patch assumes that the 
new Chilean practice is being introduced this year.
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