Alas, while the current tz package can get the day-skipping part of
the Julian-to-Gregorian calendar transition right, it gets
pre-transition weekdays worng.
(Getting them right would require special casing for big offsets from standard time in localtime.c)
@dashdashado
Script started on Sat, Nov 10, 2018 6:47:15 PM
$ cat fake
Zone America/Somewhere -268:56:02 - LMT 1752 Sep 3
-4:56:02 - LMT
$ ./zic fake
$ ./zdump -v America/Somewhere
America/Somewhere -9223372036854775808 = NULL
America/Somewhere -9223372036854689408 = NULL
America/Somewhere Thu Sep 14 04:56:01 1752 UT = Sat Sep 2 23:59:59 1752 LMT isdst=0 gmtoff=-968162
America/Somewhere Thu Sep 14 04:56:02 1752 UT = Thu Sep 14 00:00:00 1752 LMT isdst=0 gmtoff=-17762
America/Somewhere 9223372036854689407 = NULL
America/Somewhere 9223372036854775807 = NULL
$ exit
exit
Script done on Sat, Nov 10, 2018 6:47:36 PM