Re: calendar gets wrong end for Daylight Savings Time

[James Cloos]

>>>>> "GM" == Glenn Morris <address@hidden> writes:

GM> So what in that output tells me that the DST transition date changes
GM> in 2007?

As you can see from that output America/Phoenix has not done daylight
time since 1944 (US wartime national Mandate).  Try America/Chicago,
America/New_York, America/Los_Angeles or America/Denver for a
lengthier output that does show the 2007 change.  (Denver shows this:

,----
| .
| .
| .
| America/Denver  Sun Apr  3 08:59:59 2005 UTC = Sun Apr  3 01:59:59 2005 MST 
isdst=0
| America/Denver  Sun Apr  3 09:00:00 2005 UTC = Sun Apr  3 03:00:00 2005 MDT 
isdst=1
| America/Denver  Sun Oct 30 07:59:59 2005 UTC = Sun Oct 30 01:59:59 2005 MDT 
isdst=1
| America/Denver  Sun Oct 30 08:00:00 2005 UTC = Sun Oct 30 01:00:00 2005 MST 
isdst=0
| America/Denver  Sun Apr  2 08:59:59 2006 UTC = Sun Apr  2 01:59:59 2006 MST 
isdst=0
| America/Denver  Sun Apr  2 09:00:00 2006 UTC = Sun Apr  2 03:00:00 2006 MDT 
isdst=1
| America/Denver  Sun Oct 29 07:59:59 2006 UTC = Sun Oct 29 01:59:59 2006 MDT 
isdst=1
| America/Denver  Sun Oct 29 08:00:00 2006 UTC = Sun Oct 29 01:00:00 2006 MST 
isdst=0
| America/Denver  Sun Mar 11 08:59:59 2007 UTC = Sun Mar 11 01:59:59 2007 MST 
isdst=0
| America/Denver  Sun Mar 11 09:00:00 2007 UTC = Sun Mar 11 03:00:00 2007 MDT 
isdst=1
| America/Denver  Sun Nov  4 07:59:59 2007 UTC = Sun Nov  4 01:59:59 2007 MDT 
isdst=1
| America/Denver  Sun Nov  4 08:00:00 2007 UTC = Sun Nov  4 01:00:00 2007 MST 
isdst=0
| America/Denver  Sun Mar  9 08:59:59 2008 UTC = Sun Mar  9 01:59:59 2008 MST 
isdst=0
| America/Denver  Sun Mar  9 09:00:00 2008 UTC = Sun Mar  9 03:00:00 2008 MDT 
isdst=1
| America/Denver  Sun Nov  2 07:59:59 2008 UTC = Sun Nov  2 01:59:59 2008 MDT 
isdst=1
| America/Denver  Sun Nov  2 08:00:00 2008 UTC = Sun Nov  2 01:00:00 2008 MST 
isdst=0
| .
| .
| .
`----

(I had quoted Phoenix jsut because it is short and I could include the
whole output....)

GM> On a 64-bit system, the last two entries in the above output are
GM> replaced by the less enlightening:

GM> America/Phoenix  9223372036854689407 = NULL
GM> America/Phoenix  9223372036854775807 = NULL

That would be a bug.  address@hidden is the list discussing the
package and would be a good place to report that bug.

GM> Since I have a method that (I think) should work well on all platforms
GM> in the style that the calendar currently uses, I'm tempted to install
GM> the patch I already have, and file switching to this method as a TODO
GM> item for some future date.

Your plan has reason.  (Now if I could just remember where that
(almost-) quote is from.... ;-)

-JimC
--
James Cloos <address@hidden>         OpenPGP: 0xED7DAEA6