Daylight saving time typically lasts about eight months of the year in places that use the modern U.S.-style schedule, meaning roughly early March to early November.

How Long Does Daylight Savings Last?

In most of the United States, daylight saving time (DST) runs from the second Sunday in March to the first Sunday in November , which adds up to about 34 weeks, or around 65% of the year. Put simply, you spend more of the year on DST than on standard time if you live in a place that follows this system.

Does It Work The Same Everywhere?

Different regions start and end DST on different dates, and some skip it entirely.

  • In the U.S. , DST: second Sunday in March → first Sunday in November.
  • In much of Europe/UK , clocks go forward on the last Sunday in March and back on the last Sunday in October.
  • Some places (like most of Arizona and Hawaii) don’t observe DST at all.

So, the exact dates change slightly every year, but the pattern—about eight months on DST and about four months on standard time—stays the same in countries that follow this modern schedule.

Quick Example (U.S. Style Year)

  • Clocks spring forward : second Sunday in March → DST begins.
  • Clocks fall back : first Sunday in November → DST ends and standard time returns.

That’s the practical answer to “how long does daylight savings last”: for most people in DST-observing U.S. regions, nearly two-thirds of the year.