Daylight Saving Time
Skip navigation

Obtain the start and end dates for Daylight Saving Time in the U.S. for 1967 or later by entering a year below and clicking on the "Get Dates" button.

  

Notes

At the start date of Daylight Saving Time, the clock is advanced by one hour; at the end date of Daylight Saving Time, the clock is decreased by one hour.

Not all places in the U.S. observe Daylight Saving Time. Hawaii and most of Arizona observe standard time only.

For information about the implementation and history of Daylight Saving Time in the U.S., go here.

Application Programming Interface

This data service uses one of our new Application Programming Interfaces (APIs). The API returns data in JavaScript Object Notation (JSON) format for users who wish to manipulate data into a customized format. For more information on the API, please see the documentation page.