Title 15 › Chapter 6— WEIGHTS AND MEASURES AND STANDARD TIME › Subchapter IX— STANDARD TIME › § 265
The Panhandle and Plains parts of Texas and Oklahoma must be placed in the United States central time zone. The Secretary of Transportation must issue an order that draws the western edge of that time zone through specific state lines: starting where it crosses the Kansas–Oklahoma border, west along that border to Oklahoma’s northwest corner, then south along the west borders of Oklahoma and Texas to New Mexico’s southeast corner, then west along the Texas–New Mexico line to the Rio Grande, and then down the Rio Grande as the U.S.–Mexico border. Some railroads are allowed to change time at set towns instead of at that line: the Chicago, Rock Island and Gulf and Chicago, Rock Island and Pacific may use Tucumcari; the Colorado Southern and Fort Worth and Denver City may use Sixela; the Atchison, Topeka and Santa Fe system may use Clovis; and lines into or through El Paso may use El Paso. Other time zone adjustments made by the Secretary remain in effect except where this law says otherwise.
Full Legal Text
Commerce and Trade — Source: USLM XML via OLRC
Legislative History
Reference
Citation
15 U.S.C. § 265
Title 15 — Commerce and Trade
Last Updated
Apr 3, 2026
Release point: 119-73not60