Closed gaps in Eastern Time Zone boundaries introduced in changeset 116222
Included Fort Pierre, SD, in Mountain Time Zone since 1919
Corrected building construction/demolition dates
Samoa Time Zone is UTC−11, not UTC−10
Included Wayne Co., KY, in Central Time Zone between 1960 to 2000
Included Upper Peninsula of Michigan in Central Time between 1936 and 1969
Included Mellette, Todd counties in Mountain Time Zone prior to 2003
Collapsed span extends further north
Added Francis Scott Key Bridge
Added changes to U.S. time zone boundaries from 1919 to 1923
Added changes to U.S. time zone boundaries from 1922 to 1930
Fixed gap in Missoula Co., MT, boundary relation
Fixed gaps in North Carolina, Virginia boundary relations