2025 Time Change Schedule
| Season | Date | Time | Action |
|---|---|---|---|
| Spring | 2025-03-09 | 2:00 AM | Clocks forward to 3:00 AM |
| Fall | 2025-11-02 | 2:00 AM | Clocks back to 1:00 AM |
Time Until Next Change
Health Considerations for California Residents
Medical research has revealed important health impacts of time changes in California. 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 6% 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 California.
IT departments should be particularly vigilant about server time synchronization, especially for systems handling financial transactions or time-sensitive operations.
Agricultural Considerations
Farmers in California 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.
Energy Consumption Patterns in California
Recent studies on energy consumption during DST in California show modest savings of approximately 0.5% in electricity usage. However, these savings are offset by increased gasoline consumption as people take advantage of extended daylight for travel and recreation. The net energy impact remains a subject of ongoing research and debate among policy makers.
Preparation Tips
✓ Gradually adjust your sleep schedule a few days before the time change to minimize disruption.
✓ Update your car clock, microwave, and other manual clocks that don't auto-update.
✓ Set your clocks before going to bed to avoid confusion in the morning.
✓ Check and replace smoke detector batteries when changing clocks - it's a good reminder!