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<p><tt>I have to report an error in zone America/Kentucky/Louisville</tt></p>
<p><tt>zdump gives<br>
</tt><tt>zdump -V -c 1945,1950 America/Kentucky/Louisville</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Tue Aug 14 22:59:59 1945 UT
= Tue Aug 14 17:59:59 1945 CWT isdst=1 gmtoff=-18000</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Tue Aug 14 23:00:00 1945 UT
= Tue Aug 14 18:00:00 1945 CPT isdst=1 gmtoff=-18000</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Sun Sep 30 06:59:59 1945 UT
= Sun Sep 30 01:59:59 1945 CPT isdst=1 gmtoff=-18000</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Sun Sep 30 07:00:00 1945 UT
= Sun Sep 30 01:00:00 1945 CST isdst=0 gmtoff=-21600</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Tue Jan 1 05:59:59 1946 UT
= Mon Dec 31 23:59:59 1945 CST isdst=0 gmtoff=-21600</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Tue Jan 1 06:00:00 1946 UT
= Tue Jan 1 01:00:00 1946 CDT isdst=1 gmtoff=-18000</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Sun Jun 2 06:59:59 1946 UT
= Sun Jun 2 01:59:59 1946 CDT isdst=1 gmtoff=-18000</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Sun Jun 2 07:00:00 1946 UT
= Sun Jun 2 01:00:00 1946 CST isdst=0 gmtoff=-21600</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Sun Apr 27 07:59:59 1947 UT
= Sun Apr 27 01:59:59 1947 CST isdst=0 gmtoff=-21600</tt><tt><br>
</tt><tt>America/Kentucky/Louisville Sun Apr 27 08:00:00 1947 UT
= Sun Apr 27 03:00:00 1947 CDT isdst=1 gmtoff=-18000</tt></p>
<p><tt>with a strange transition CST to CDT on 1 January 1946.<br>
I have searched Louisville newspaper archives and find no report
of such a clock change around New Year 1946.</tt></p>
<p><tt>I find however the begin of CDT for 28 April 1946, and the
switch back to CST on 2 June 1946.</tt></p>
<p><tt>Shanks also has the transition on 28 April 1946.</tt></p>
<p><tt>The cause I thnk is the strange formulation of Louisville
rules</tt></p>
<p><tt># This also includes Clark, Floyd, and Harrison counties in
Indiana.<br>
# Rule NAME FROM TO TYPE IN ON AT
SAVE LETTER<br>
Rule Louisville 1921 only - May 1 2:00
1:00 D<br>
Rule Louisville 1921 only - Sep 1 2:00
0 S<br>
Rule Louisville 1941 1961 - Apr lastSun 2:00
1:00 D<br>
Rule Louisville 1941 only - Sep lastSun 2:00
0 S<br>
Rule Louisville 1946 only - Jun 2 2:00
0 S<br>
Rule Louisville 1950 1955 - Sep lastSun 2:00
0 S<br>
Rule Louisville 1956 1960 - Oct lastSun 2:00
0 S<br>
# Zone NAME STDOFF RULES FORMAT [UNTIL]<br>
Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov
18 12:16:58<br>
-6:00 US C%sT 1921<br>
-6:00 Louisville C%sT 1942<br>
-6:00 US C%sT 1946<br>
-6:00 Louisville C%sT 1961 Jul 23
2:00<br>
-5:00 - EST 1968<br>
-5:00 US E%sT 1974 Jan 6
2:00<br>
-6:00 1:00 CDT 1974 Oct 27
2:00<br>
-5:00 US E%sT<br>
</tt></p>
<p>I attach a newspaper article describing the swith on 28 April.<br>
</p>
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