Louisville

The Louisville & Nashville Railroad's 1883-11-18 change occurred at 10:00 old local time; train were supposed to come to a standstill for precisely 18 minutes. See Bartky Fig. 1 (page 50). It is not clear how this matched civil time in Louisville, so for now continue to assume Louisville switched at noon new local time, like New York. From the contemporary source given by Alois Treindl, the switch in Louisville on 1946-04-28 was on 00:01 That source was the Louisville Courier-Journal, 1946-04-27, p 4. Shanks gives 02:00 for all 20th-century transition times in Louisville. Evidently this is wrong for spring 1946. Although also likely wrong for other dates, we have no data. Part of Kentucky left its clocks alone in 1974. This also includes Clark, Floyd, and Harrison counties in Indiana.