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<DIV><FONT size=2>
<DIV><FONT face=Arial><SPAN class=138552015-08122009>Hi</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=138552015-08122009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial><SPAN class=138552015-08122009><SPAN
class=216084014-09122009>[This is a resending due to issues with the email
address I sent to. I apologize if you receive it in
double]</SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=138552015-08122009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial><SPAN class=138552015-08122009>Looking into some timezone
information I have the following interrogation, and</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=138552015-08122009>I am unsure if my
interpretation of the file is wrong, or if the rules are
wrong...</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN
class=138552015-08122009></SPAN></FONT> </DIV><FONT size=+0><SPAN
class=138552015-08122009>
<DIV><FONT size=2><FONT face=Arial>This comes from tzdata2009s<SPAN
class=138552015-08122009>, southamerica file</SPAN></FONT></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The rules are</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> #
Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S<BR>
<BR>
Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S<BR>
Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 -<BR>
Rule Brazil 2012 only - Feb Sun>=22 0:00 0 -<BR>
Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 -</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT><BR><FONT face=Arial size=2>The
Timezone</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> #<BR> # east Amazonas
(AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto<BR> # The great
circle line from Tabatinga to Porto Acre divides<BR> # east from
west Amazonas.<BR> Zone America/Manaus -4:00:04
- LMT 1914<BR>
-4:00 Brazil AM%sT 1988 Sep 12<BR>
-4:00 - AMT 1993 Sep 28<BR>
-4:00 Brazil AM%sT 1994 Sep 22<BR>
-4:00 - AMT<BR>
<BR>From what I understand from the<SPAN class=216084014-09122009> above</SPAN>,
America/Manaus does not observe DST ever<SPAN class=138552015-08122009>
</SPAN>since Sep 22, 1994.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>However, looking at the Microsoft Timezone
definition [Dec 2009 update] <BR>for (GMT -4:00) Manaus [Central Brazilian
Standard Time]<BR> the timezone observe DST from 3rd Saturday of
October 23:59:59 to<SPAN class=216084014-09122009> </SPAN>3rd Saturday of
February, 23:59:59.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Also, another non-official site seems to imply the
same:<BR> [http://www.icfsi2007.com/city_more.php will
show<BR> Time<BR> Manaus Time Zone is 1 hour
less than Brasilia, Sao Paulo or Rio de Janeiro Time Zone (GMT - 03:00),
<BR> four hours behind of Greenwich Mean Time (GMT),
<BR> except during the period between late October and the end
of February, <BR> when daylight saving time is in force (GMT -
05:00 hours). <BR> ]</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>So either</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>a) I do not interpret the timezone rules properly
for America/Manaus,<SPAN class=138552015-08122009> </SPAN>and there is a
DST being observed there.<BR> If so, please let me know how I should
read the above rules/timezone information.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>b) Microsoft timezone is incorrect</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>c) Olson data is incorrect</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>d) The Microsoft timezone [(GMT -4:00) Manaus -
Central Brazilian Standard Time] does not<BR> correspond to the
Olson's America/Manaus timezone<BR> </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Your opinion would be
appreciated<BR>Thanks<BR>-Alain Petit</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial
size=2></FONT></SPAN></FONT><FONT size=2><SPAN
class=138552015-08122009></SPAN></FONT> </DIV></FONT></DIV></BODY></HTML>