make/data/tzdata/northamerica

*** 369,378 ****
--- 369,390 ----
  # Vanderburgh, and Warrick counties), Iowa, most of Kansas, western
  # Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern
  # Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota,
  # western Tennessee, most of Texas, Wisconsin
  
+ # From Paul Eggert (2018-01-07):
+ # In 1869 the Chicago Astronomical Society contracted with the city to keep
+ # time.  Though delayed by the Great Fire, by 1880 a wire ran from the
+ # Dearborn Observatory (on the University of Chicago campus) to City Hall,
+ # which then sent signals to police and fire stations.  However, railroads got
+ # their time signals from the Allegheny Observatory, the Madison Observatory,
+ # the Ann Arbor Observatory, etc., so their clocks did not agree with each
+ # other or with the city's official time.  The confusion took some years to
+ # clear up.  See:
+ # Moser M. How Chicago gave America its time zones. Chicago. 2018-01-04.
+ # http://www.chicagomag.com/city-life/January-2018/How-Chicago-Gave-America-Its-Time-Zones/
+ 
  # From Larry M. Smith (2006-04-26) re Wisconsin:
  # https://docs.legis.wisconsin.gov/statutes/statutes/175.pdf
  # is currently enforced at the 01:00 time of change.  Because the local
  # "bar time" in the state corresponds to 02:00, a number of citations
  # are issued for the "sale of class 'B' alcohol after prohibited
*** 1917,1927 ****
  # Earlier this year I stumbled across a detailed article about the time
  # keeping history of Creston; it was written by Tammy Hardwick who is the
  # manager of the Creston & District Museum. The article was written in May 2009.
  # http://www.ilovecreston.com/?p=articles&t=spec&ar=260
  # According to the article, Creston has not changed its clocks since June 1918.
! # i.e. Creston has been stuck on UTC-7 for 93 years.
  # Dawson Creek, on the other hand, changed its clocks as recently as April 1972.
  
  # Unfortunately the exact date for the time change in June 1918 remains
  # unknown and will be difficult to ascertain.  I e-mailed Tammy a few months
  # ago to ask if Sunday June 2 was a reasonable guess.  She said it was just
--- 1929,1939 ----
  # Earlier this year I stumbled across a detailed article about the time
  # keeping history of Creston; it was written by Tammy Hardwick who is the
  # manager of the Creston & District Museum. The article was written in May 2009.
  # http://www.ilovecreston.com/?p=articles&t=spec&ar=260
  # According to the article, Creston has not changed its clocks since June 1918.
! # i.e. Creston has been stuck on UT-7 for 93 years.
  # Dawson Creek, on the other hand, changed its clocks as recently as April 1972.
  
  # Unfortunately the exact date for the time change in June 1918 remains
  # unknown and will be difficult to ascertain.  I e-mailed Tammy a few months
  # ago to ask if Sunday June 2 was a reasonable guess.  She said it was just