When should you turn the clocks ahead? What to know about the time change

Miami Herald Archives, Miami Herald on Mar 1, 2025

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March is the time to change the time.

We’ll spring ahead on March 9, 2025, for the start of daylight saving time.

We “fall back” and return to standard time in November. That’s when we can reclaim our hour of sleep.

Here’s what to know about changing the clock:

When is daylight saving time?

Time change: Daylight saving time starts at 2 a.m. Sunday, March 9, 2025.

Sleep: Springing ahead means you’ll lose an hour of sleep when the time changes. You can make it up on Nov. 2, when we turn the clocks back again.

Pro tip: Move your manually controlled clocks ahead an hour before going to sleep on Saturday night, March 8.

When does daylight saving time end?

▪ 2 a.m. Nov. 3, when sunrise will be and sunset will be 6:45 a.m. and 5:30 p.m..

Why do we tinker with the clock?

Saving energy: Daylight saving time is all about a desire to save energy by extending sunlight later in the day during spring and summer. A study conducted by the U.S. Department of Energy found that the four-week extension of daylight saving time in 2008 saved about 0.5% of the nation’s electricity per day, or 1.3 trillion watt-hours — which is enough to power 100,000 households for an entire year.

Safety: Studies have also shown that the extra hour of daylight has resulted in safer roads, lower crime rates and economic benefits.

Disruptions: Other concerns about daylight saving time have included disruptions to harvesting schedules for farmers, interference with religious observances based on solar and lunar time, and potential delays in reworking computer systems programmed to switch twice a year.