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<DIV><FONT face=Arial size=2>In a previous email Robbin Ka<SPAN
class=557373405-21072008>w</SPAN>a<SPAN class=557373405-21072008>b</SPAN>ata has
shown unintended changes for<BR>the tz database relating to <SPAN
class=557373405-21072008>the</SPAN> change for <SPAN
class=557373405-21072008>the </SPAN>C-Eur Rule<SPAN class=557373405-21072008> in
2008d</SPAN>. Here are the relevant<BR>portions of the tz database together with
a few suggestions to<BR>mend it (with + and - as the first letter of the
relevant lines):</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial
size=2>Rule C-Eur 1944 1945 - Apr Mon>=1
2:00s 1:00 S<BR># Whitman gives 1944 Oct 7; go with Shanks &
Pottenger. <BR>Rule C-Eur 1944 only - Oct 2
2:00s 0 -<BR>Rule C-Eur 1945 only - Sep 16
2:00 0 -<BR>...<BR># These are for backward compatibility with older
versions.<BR>...<BR>#
Zone NAME GMTOFF RULES FORMAT [UNTIL]<BR>Zone WET 0:00 EU WE%sT<BR>Zone CET 1:00 C-Eur CE%sT<BR>Zone MET 1:00 C-Eur ME%sT<BR>...<BR>Zone Europe/Sofia 1:33:16
- LMT 1880<BR> 1:56:56 - IMT 1894 Nov
30 # Istanbul MT?<BR> 2:00 - EET 1942 Nov
2 3 :00<BR>- 1:00 C-Eur CE%sT 1945
Apr 2
3:00<BR>+ 1:00 C-Eur CE%sT 1945<BR>+ 1:00 - CET 1945
Apr 2 3:00<BR> 2:00 - EET 1979 Mar
31 23:00<BR>...<BR>Zone Europe/Budapest 1:16:20 - LMT 1890
Oct<BR> 1:00 C-Eur CE%sT 1918<BR> 1:00 Hungary CE%sT 1941
Apr 6
2:00<BR>- 1:00 C-Eur CE%sT 1945 May 1
23:00<BR>+ 1:00 C-Eur CE%sT 1945<BR> 1:00 Hungary CE%sT 1980
Sep 28
2:00s<BR>...<BR>Zone Europe/Belgrade 1:22:00 - LMT 1884<BR> 1:00 - CET 1941
Apr 18 23:00<BR>- 1:00 C-Eur CE%sT 1945
May 8
2:00s<BR>+ 1:00 C-Eur CE%sT 1945<BR>+ 1:00 - CET 1945
May 8 2:00s<BR> 1:00 1:00 CEST 1945
Sep 16 2:00s</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The problem arose because the C-Eur rules had no
DST for 1945, making other<BR>timezones free to use it without effects for 1945.
However this meant that<BR>Zone CET and Zone MET did not have DST for 1945,
which is not very adequate.<BR>I agree with the action of adding DST for C-Eur
for 1945, but that means that<BR>other timezones using C-Eur must be changed to
return status quo.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>As far as I can see only Europe/Sofia,
Europe/Budapest and Europe/Belgrade are<BR>affected, though of course
Europe/Skopje and other timezones linking to <BR>Europe/Belgrade will be equally
affected.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>My suggestion for Europe/Sofia and Europe/Belgrade
are to stop using C-Eur from<BR>1945 since the timezone abbreviation (CET) will
be the same, and then only start<BR>CEST from the previous cutoff
dates.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>For Europe/Budapest the answer is easier since
Hungary rule already has the<BR>DST start time of May 1, 1945 at 23:00 encoded,
so the Hungary rule can simply<BR>be used insted of C-Eur since
1945.</FONT></DIV>
<DIV><SPAN class=557373405-21072008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=557373405-21072008><FONT face=Arial size=2>I don't have access
to a zic compiler to see if the desired results crop out, so I
</FONT></SPAN></DIV>
<DIV><SPAN class=557373405-21072008><FONT face=Arial size=2>will leave that to
people who can check it.</FONT></SPAN></DIV>
<DIV><FONT face=Arial><SPAN class=557373405-21072008></SPAN></FONT><FONT
face=Arial><FONT size=2></FONT> </DIV>
<DIV><FONT size=2></FONT><FONT size=2></FONT><FONT
size=2></FONT><BR></FONT><FONT size=2><SPAN
class=557373405-21072008>J</SPAN>esper Nørgaard Welen<BR>Email:
jnorgard@Prodigy.Net.mx <BR>Project Leader (Líder de Proyecto)
Software<BR>CIMMYT - Centro Internacional de Mejoramiento de Maíz y
Trigo<BR>Dirección: CIMMYT Int. c/o Jesper Nørgaard<BR>Km. 45, Carretera
México-Veracruz<BR>El Batán<BR>Texcoco, Edo. de México<BR>CP 56130
MEXICO<BR>Tel.: +52 (55) 58-04-20-04 ext.
1374<BR>Fax: +52 (55) 58-04-75-58<BR>Tel. Casa:
53-10-05-95 ó 53-10-97-78<BR>Download the shareware program World
Time Explorer, I made:<BR></FONT><A
href="http://www.worldtimeexplorer.com/index.html"><FONT
size=2>http://www.worldtimeexplorer.com/index.html</FONT></A><BR></DIV>
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