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postgres/src/timezone
History
Bruce Momjian 29dccf5fe0
Update CVS HEAD for 2007 copyright. Back branches are typically not 		19 years ago
..
data Update timezone data to tzdata2006p zic distribution. It seems Western 19 years ago
tznames Put JST back into the default set of timezone abbreviations; 19 years ago
Makefile Remove hard-wired lists of timezone abbreviations in favor of providing 20 years ago
README Remove hard-wired lists of timezone abbreviations in favor of providing 20 years ago
ialloc.c
…
localtime.c Fix up timetz input so that a date is required only when the specified 20 years ago
pgtz.c Update CVS HEAD for 2007 copyright. Back branches are typically not 19 years ago
pgtz.h Update CVS HEAD for 2007 copyright. Back branches are typically not 19 years ago
private.h
…
scheck.c
…
strftime.c Remove 576 references of include files that were not needed. 20 years ago
tzfile.h
…
zic.c Tweak zic.c to compile cleanly on MSVC: use CopyFile instead of 19 years ago

README 

This is a PostgreSQL adapted version of the timezone library
from:

	ftp://elsie.nci.nih.gov/pub/tzcode*.tar.gz

The data files under data/ are an exact copy of the latest data set
from

	ftp://elsie.nci.nih.gov/pub/tzdata*.tar.gz

Since time zone rules change frequently in some parts of the world,
we should endeavor to update the data files before each PostgreSQL
release.

At each update, we should check if time zone offsets have changed.
Just search for the current or previous year and see what has changed.
Sometimes a country changes its time zone offsets, for example Georgia
in 2004.  Just grepping in the zic database files for 2004 is enough to
spot such a change.  Then the files under tznames/ should be updated.