Quick Answer: 2025 Time Change Dates
At 2:00 AM, clocks will spring forward to 3:00 AM
At 2:00 AM, clocks will fall back to 1:00 AM
Countdown to Next Time Change
Health Considerations for Arizona Residents
Medical research has revealed important health impacts of time changes in Arizona. The spring forward transition is associated with a 9% increase in heart attacks during the first three days after the change. Car accidents also spike by approximately 8% on the Monday following the spring time change.
Technology and Time Changes in 2025
Modern devices handle DST transitions automatically, but some systems still require manual updates. In 2025, ensure your smart home devices, car navigation systems, and older electronics are properly configured. Many IoT devices now use internet time servers for automatic updates, reducing the burden on users in Arizona.
IT departments should be particularly vigilant about server time synchronization, especially for systems handling financial transactions or time-sensitive operations.
Historical Context
- The Uniform Time Act of 1966 established the system of uniform Daylight Saving Time throughout the US.
- Arizona and Hawaii are the only US states that don't observe DST statewide.
- The energy savings from DST are debated, with modern studies showing minimal impact.
Agricultural Considerations
Farmers in Arizona have historically had mixed feelings about DST. While the original justification for DST included giving farmers more daylight hours, modern farming practices rely heavily on the sun's position rather than clock time. Dairy farmers particularly note that cows don't adjust their biological clocks, creating temporary disruptions in milking schedules.
Tips for Arizona Residents
Use the phrase 'Spring forward, fall back' to remember which direction to change your clocks.
Consider the time change when scheduling meetings with people in other time zones.
Set your clocks before going to bed to avoid confusion in the morning.
Gradually adjust your sleep schedule a few days before the time change to minimize disruption.
Why do we change clocks?
Daylight Saving Time was implemented to make better use of daylight during summer months, theoretically saving energy and providing more evening daylight for activities.
Do all states observe DST?
No, Hawaii and most of Arizona do not observe Daylight Saving Time. Some territories also opt out of the time change.
Is DST being eliminated?
While there have been various proposals to eliminate DST, as of 2025, most regions continue to observe the biannual time change.