On Fri, Dec 15, 2006 at 11:37:56AM -0500, Tom Lane wrote:
> Joachim Wieland <[EMAIL PROTECTED]> writes:
> > Appended is a patch that adds JST and JDT into Asia.txt and the Default set.

> Um ... is there a JDT?  Last I heard, Japan does not observe daylight
> time.  I don't see a JDT in the old PG set of recognized zone names, and
> I'd think we'd have heard complaints long ago if it were needed.

True... Actually I wonder how I have to read the zic files in this case.
It says:

Rule    Japan   1948    only    -       May     Sun>=1  2:00    1:00    D
Rule    Japan   1948    1951    -       Sep     Sat>=8  2:00    0       S
Rule    Japan   1949    only    -       Apr     Sun>=1  2:00    1:00    D
Rule    Japan   1950    1951    -       May     Sun>=1  2:00    1:00    D

Zone    Asia/Tokyo      9:18:59 -       LMT     1887 Dec 31 15:00u
                        9:00    -       JST     1896
                        9:00    -       CJT     1938
                        9:00    Japan   J%sT

The last column of the rules tell us what to put in for %s, but why is there

Rule    Japan   19xx    max     ....                                    S

rule? I.e. a rule saying that after some date we should always replace %s
by S? What am I missing here?


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