Changes in Chile??

[Glenn Eychaner]

On Aug 18, 2011, at 8:39 AM, richard_gombert at goodyear.com wrote:

> I just found out that Chile will be going on Daylight Savings Time This coming weekend. 
> I looked back through this discussion group and I found no previous discussion of this. 
> Sunday, August 21, 2011 at 12:00:00 Midnight clocks are turned forward 1 hour to 
> Sunday, August 21, 2011 at 1:00:00 AM local daylight time instead 
> According to the patch applied earlier this year it was (originally) scheduled for October 9, 2011. 

This was discussed (by me!) sometime around late March when the change was made; I submitted a patch which was accepted at that time which changed the DST off time to May and the DST on time to August.  From the current file (tzdata2011h):

Rule	Chile	1999	2010	-	Oct	Sun>=9	4:00u	1:00	S
Rule	Chile	2011	only		-	Aug	Sun>=16	4:00u	1:00	S
Rule	Chile	2012	max		-	Oct	Sun>=9	4:00u	1:00	S

America/Santiago  Sun Apr  4 02:59:59 2010 UTC = Sat Apr  3 23:59:59 2010 CLST isdst=1 gmtoff=-10800
America/Santiago  Sun Apr  4 03:00:00 2010 UTC = Sat Apr  3 23:00:00 2010 CLT isdst=0 gmtoff=-14400
America/Santiago  Sun Oct 10 03:59:59 2010 UTC = Sat Oct  9 23:59:59 2010 CLT isdst=0 gmtoff=-14400
America/Santiago  Sun Oct 10 04:00:00 2010 UTC = Sun Oct 10 01:00:00 2010 CLST isdst=1 gmtoff=-10800
America/Santiago  Sun May  8 02:59:59 2011 UTC = Sat May  7 23:59:59 2011 CLST isdst=1 gmtoff=-10800
America/Santiago  Sun May  8 03:00:00 2011 UTC = Sat May  7 23:00:00 2011 CLT isdst=0 gmtoff=-14400
America/Santiago  Sun Aug 21 03:59:59 2011 UTC = Sat Aug 20 23:59:59 2011 CLT isdst=0 gmtoff=-14400
America/Santiago  Sun Aug 21 04:00:00 2011 UTC = Sun Aug 21 01:00:00 2011 CLST isdst=1 gmtoff=-10800
America/Santiago  Sun Mar 11 02:59:59 2012 UTC = Sat Mar 10 23:59:59 2012 CLST isdst=1 gmtoff=-10800
America/Santiago  Sun Mar 11 03:00:00 2012 UTC = Sat Mar 10 23:00:00 2012 CLT isdst=0 gmtoff=-14400
America/Santiago  Sun Oct 14 03:59:59 2012 UTC = Sat Oct 13 23:59:59 2012 CLT isdst=0 gmtoff=-14400
America/Santiago  Sun Oct 14 04:00:00 2012 UTC = Sun Oct 14 01:00:00 2012 CLST isdst=1 gmtoff=-10800

We still have no word on what's going to happen next year.

-G.
--
Glenn Eychaner (geychaner at lco.cl)
Telescope Systems Programmer, Las Campanas Observatory



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