Overview

• The fall change applies broadly across the United States, including all of Illinois in the Central Time Zone from Chicago to Springfield, moving in step with neighboring states.
• Jurisdictions that do not shift include Hawaii, most of Arizona (except the Navajo Nation), American Samoa, Guam, the Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands.
• The Uniform Time Act and Title 49 CFR Part 71 provide the legal framework, with the Department of Transportation supervising uniform observance tied to transportation standards.
• Most phones and computers adjust automatically, but households should reset analog clocks and some appliances, confirm travel schedules, and use the weekend to check smoke‑detector batteries.
• No federal policy changes are reported, Florida’s effort to keep daylight saving time year‑round lacks congressional approval, and the next scheduled clock advance is March 8, 2026.