Self-setting · Always accurate · Since 1999
Atomic Clocks That Set Themselves
It’s 2026. Isn’t it about time you had a clock you never have to set? Shop La Crosse Technology atomic wall clocks, alarm clocks and weather stations that sync to the U.S. atomic time signal and handle daylight saving time on their own.
Sets itself every night
Syncs to NIST’s WWVB atomic time signal from Fort Collins, Colorado.
Daylight saving, handled
Springs forward and falls back automatically. No ladder required.
70+ La Crosse models
Wall, digital, alarm, projection, outdoor and weather.
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Atomic Time Right Now
Live U.S. time from coast to coast, synced to official atomic time every few minutes and adjusted for daylight saving time automatically.
Shop Atomic Clocks by Category
From 4-inch travel alarms to 21-inch outdoor showpieces, every clock here sets itself from the atomic time signal.
Popular Atomic Clocks
Shopper favorites and our top picks, from the classic 14-inch wall clock to color weather stations.
What Is an Atomic Clock?
An atomic clock, also called a radio-controlled clock, sets itself from the official U.S. time. The National Institute of Standards and Technology (NIST) keeps time with atomic clocks in Colorado and broadcasts it nationwide on radio station WWVB. Your clock listens for that signal, usually overnight when reception is best, and corrects itself to the exact second.
That means no drifting, no guessing and no climbing on a chair twice a year: atomic clocks switch to and from daylight saving time automatically. Choose your time zone once, and the clock takes care of the rest for years.
New to atomic clocks? Read our atomic clock buying guide, or see what to do if your clock didn’t change for daylight saving time.
1. Pick your time zone
Insert the batteries and choose Eastern, Central, Mountain or Pacific. Some models also cover Atlantic, Alaska and Hawaii.
2. It syncs overnight
The clock tunes in to WWVB, usually between midnight and dawn, and sets the exact time and date.
3. It stays right
It checks in daily and handles daylight saving time, so it never needs adjusting.
Atomic Clock Guides & Tips
Practical advice on choosing, setting up and troubleshooting atomic clocks and weather stations.
Best La Crosse Atomic Weather Stations for 2026: How to Pick the Right One
Compare La Crosse atomic weather stations: color forecast, barometric pressure, multi-sensor, wind and fishing models, plus where to put the outdoor sensor.Read the guide →
How to Choose the Right Atomic Clock: A 2026 Buying Guide
Wall, digital, projection, alarm or outdoor? How to pick the right self-setting atomic clock for every room, and the features worth checking…Read the guide →
Why Didn’t My Atomic Clock Change for Daylight Saving Time? (And How to Fix It)
Atomic clock still an hour off after the time change? Here’s why it happens and four quick fixes that solve it for…Read the guide →Atomic Clock FAQ
It has a small radio receiver tuned to WWVB, the time signal NIST broadcasts from near Fort Collins, Colorado. Once a day, usually overnight, the clock picks up the signal and corrects itself to the exact second.
Yes. The WWVB signal carries daylight saving time information, so the clock springs forward and falls back on its own. Most models also have a DST off setting for places that don’t observe it, like most of Arizona and Hawaii.
Give it a night. Place the clock near a window, ideally on the side of the house facing Colorado, and away from TVs, computers and Wi-Fi routers. Reception is strongest between midnight and sunrise, and in tough spots it can take a few nights.
The WWVB signal covers the continental United States. Reception can be weaker in basements, metal buildings and at the far edges of the country. UltrAtomic models, which read NIST’s enhanced signal, are designed for those tougher spots.
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More questions? See our full atomic clock FAQ.
Never Set a Clock Again
Pick a clock, hang it up, and let the atomic time signal do the rest.