March to November
The daylight saving time (DST) period in the U.S. begins each year on the second Sunday in March when clocks are set forward by one hour. They are turned back again to standard time on the first Sunday in November as DST ends.
State legislatures continue to grapple with the vexing and multifaceted state policy questions regarding the biannual changing of the clocks. Most all of the states have considered legislation over the last several years that would place the state permanently on either standard time or daylight saving time. Since 2015, at least 350 bills and resolutions have been introduced in virtually every state, but none of significance passed until 2018, when Florida became the first state to enact legislation to permanently observe DST, pending amendment of federal law to permit such action.
In the last four years, 18 states have enacted legislation or passed resolutions to provide for year-round daylight saving time, if Congress were to allow such a change, and in some cases, if surrounding states enact the same legislation. Because federal law does not currently allow full-time DST, Congress would have to act before states could adopt changes.
The 18 states are Alabama, Georgia, Minnesota, Mississippi and Montana (2021). Idaho, Louisiana, Ohio (resolution), South Carolina, Utah and Wyoming (2020). Delaware, Maine, Oregon, Tennessee and Washington (2019). Florida (2018; California voters also authorized such a change that year, but legislative action is pending). Some states have commissioned studies on the topic including Massachusetts (2017) and Maine (2021).
Two states — Arizona and Hawaii — and the U.S. territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the Virgin Islands observe permanent standard time.