On Fri, Sep 25, 2015 at 11:03 PM, Alexander Belopolsky < alexander.belopolsky@gmail.com> wrote:

You need to use my zdump.py tool [1] to see it:

$ ./python.exe Tools/tz/zdump.py Europe/Tallinn | grep 1999 1999-03-28 01:00:00 UTC = 1999-03-28 04:00:00 EEST isdst=1 +1 1999-10-31 01:00:00 UTC = 1999-10-31 03:00:00 EET isdst=0 -1 1999-10-31 22:00:00 UTC = 1999-11-01 00:00:00 EET isdst=0 +0

[1] : https://github.com/abalkin/cpython/blob/issue24773-s3/Tools/tz/zdump.py

It looks like this problem has been fixed [2] in the 2015f release: $ ./python.exe Tools/tz/zdump.py /usr/local/etc/zoneinfo/Europe/Tallinn | grep 1999 1999-03-28 01:00:00 UTC = 1999-03-28 04:00:00 EEST isdst=1 +1 1999-10-31 01:00:00 UTC = 1999-10-31 03:00:00 EET isdst=0 -1 [2]: https://github.com/eggert/tz/commit/cf8df34364ffc9bd4eaddc5ff0d6bcdbd699893b