[tz] Michiana area (Indiana + Michigan)

Matt Johnson mj1856 at hotmail.com
Mon Nov 2 02:27:31 UTC 2015

My wife lived in Granger, Indiana, in the early 1990s, and still has family
both there and in Indianapolis.  We were discussing the mess that is history
of Indiana time zones, and she recalls a period when there was an hour
difference when calling between the two cities.  I was trying to find it in
the history, but it would appear that Granger, being in St. Joseph Country,
is considered to be in the America/Indiana/Indianapolis zone - which would
preclude them ever being different.


>From her recollection, she believes the entire Michiana area
(https://en.wikipedia.org/wiki/Michiana) may have been in the same time
zone.  I've been digging but haven't found any historical reference to back
that up.


I did see from the comments in the northamerica file that cover two counties
in the Michiana area - LaPorte and Starke.  LaPorte county is considered by
tzdb to be in Western Indiana and covered by America/Chicago, and the Starke
county has its own unique history in America/Indiana/Knox.  Since both of
those are in the Michiana area, is it possible that America/Indiana/Knox is
actually applicable in the other counties of Michiana?  If so, it would be
quite interesting since Michiana includes the Berrien and Cass counties of
Michigan, and we don't currently have those separated from America/Detroit.


Of course, I'm not suggesting making a change without the appropriate
evidence, but I'm wondering if anyone here has come across this in their




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