"Gwillim Law" <RLAW@nc.rr.com> writes:
According to http://www.dot.gov/affairs/wnd102003.htm, on 2003-10-26, the following places moved from Mountain to Central: all of Jones, Mellette, and Todd Counties, SD, and Morton County and the part of Sioux County east of route 31 in ND (excepting, of course, the parts of Jones, Morton, and Sioux that were already in Central).
Thanks. I looked into this some more, and found this reference: http://www.epa.gov/fedrgstr/EPA-IMPACT/2003/October/Day-28/i27056.htm which said that the South Dakota part of this switch was for legal time, and that the vast majority of the people in the affected area had observed central time for quite a while. Hence if it were only South Dakota we wouldn't really need a Zone entry. However, the North Dakota part of the switch seems to been a real change, as far as I can tell. OST Docket No. OST-2001-10287 <http://dmses.dot.gov/docimages/p63/135818.pdf> says that on 2001-08-28 the DOT held a hearing at New Salem, ND, and the straw vote was 60 in favor of switching to central time and 54 in favor of sticking with mountain time, and the 2000-06-13 primary election had a straw vote of 625-572 for the change. So it appears that we still need a new zone America/North_Dakota/New_Salem for the ND part of the switch.