I want to know the answer to the following question:
What month and year were two neighboring cities in Minnesota on different time schedules?
All the background I'm provided with is that "In the mid-1980s, Clorox (parent of Kingsford Charcoal) and 7-Eleven provided the primary funding for the Daylight Saving Time Coalition behind the 1987 extension to US DST, and both Idaho senators voted for it based on the premise that during DST fast-food restaurants sell more French fries, which are made from Idaho potatoes.". Is that enough to answer the question?