About Daylight Countdown
A simple, beautiful way to keep track of Daylight Saving Time — when the clocks change, why they do, and how long until the next time shift.
Daylight Countdown is a free tracker for Daylight Saving Time in the United States. Whether you're counting down to brighter evenings or bracing for the lost hour of sleep, our live countdown tells you exactly how long until the next time change — down to the second.
We follow the standard US schedule: Daylight Saving Time begins on the second Sunday of March (spring forward) and ends on the first Sunday of November (fall back), with both transitions happening at 2:00 AM local time. Our countdowns calculate the time remaining in your local time zone and update every second.
Beyond the countdown, we explain the history of Daylight Saving Time, the science of how changing the clocks affects sleep and health, how DST works around the world, and the ongoing debate over making it permanent. Our goal is to be the clearest, most useful resource on the twice-yearly clock change.
Accurate & live
Countdowns refresh every second and follow the official US DST schedule, so the number you see is the precise time left.
Clear & helpful
Plain-language guides on the history, health effects, and global practice of Daylight Saving Time — no jargon.