Best Atomic Time Clocks in 2026

Atomic self-setting time and date with automatic daylight-saving time reset

Extra-Large, easy to read digits to assist those suffering from memory loss and/or labor with abbreviated words

Adjustable display mode: Full Weekday; Weekday & Date; Seconds; or Indoor temperature (F)

Digital Wall Clock with Temperature and Humidity - These digital wall clocks are equipped with Swiss high precision SHTC3 detection sensors,help you master the most accurate indoor temperature and humidity and create the most comfortable indoor environment.

Wall Clocks Battery Operated, Autoset - Once you insert three AA batteries(Not included), it will automatically set the correct time. You just need to select the time zone. It also has a Memory BATTERY in case of a power outage, in which case it will retain the correct time and date when the power returns.(non-atomic clock)

Digital Clock Large Display - Wall clock or table clock with large number display, this desk alarm clock with 8 minutes snooze has been designed with absolute simplicity in mind, so you can operate and read it without any more ado.

SELF-SETTING, SELF-ADJUSTING CLOCK - Simply insert batteries & the Marathon Crystal Framed Atomic Wall Clock will synchronize to the correct time using radio frequencies broadcast from NIST’s Colorado Atomic Clock (only functions in North America).

LARGE DISPLAY - The clock’s large numbers and elegant, transparent, acrylic outer frame make it ideal for a home, office, school, or hospital. It easily hangs on a wall or can be placed on a table top using the sturdy fold-out stand.

MULTIPLE MODES - Choose from 3 different displays: AM/PM or 24-hour format; the month, weekday, & date; or the indoor temperature in °C or °F, plus humidity. Language can be displayed in English, Dutch, French, German, Italian, Russian, or Spanish.

SELF-SETTING, SELF-ADJUSTING CLOCK - Simply insert the batteries provided & the Marathon Slim Atomic Wall Clock will synchronize to the correct time using radio frequencies broadcast from NIST’s Colorado Atomic Clock (only functions in N. America).

LARGE DISPLAY - Our easy-to-read, 10-inch display and the sleek, contemporary design make this beautiful clock ideal for your home, office, school, or church. Easily hang it on a wall or place it on a table using the fold-out stand.

MULTIPLE MODES - This clock features a full calendar display which can be viewed in English, French, or Spanish; temperature displayed in Celsius or Fahrenheit; and time in either AM/PM or 24-hour format.

Atomic Accuracy: The Atomic clock has a built-in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within one second as it receives daily WWVB updates.

Jumbo 4” Tall LCD Time Display - Easy to Read, Easy to Use, Easy to Set up - Use as either a wall clock, or as a desk clock with integrated stand. Perfect for anyplace in your home.

Displays time (hours, minutes, seconds), indoor and outdoor temperature, calendar and day of week

SELF-SETTING, SELF-ADJUSTING CLOCK - Simply insert the batteries included & this Marathon Atomic Wall Clock will synchronize to the correct time using radio frequencies broadcast from NIST’s Colorado Atomic Clock (only functions in North America).

LARGE DISPLAY - The clock’s large, 9-inch display and sleek, contemporary design make it ideal for a home, office, school, or hospital. It easily hangs on a wall or can be placed on a table top using the sturdy fold-out stand.

MULTIPLE MODES - Choose from three different displays: AM/PM or 24-hour format; the month, weekday, and date; or the indoor room temperature in Celsius or Fahrenheit.

SELF-SETTING, SELF-ADJUSTING CLOCK - Simply insert the batteries provided & the Marathon Slim Jumbo Atomic Wall Clock will synchronize to the correct time using radio frequencies from NIST’s Colorado Atomic Clock (only functions in N. America).

LARGE DISPLAY - Our easy-to-read, 15-inch display and the sleek, contemporary design make this beautiful clock ideal for your home, office, school, or church. Easily hang it on the wall or place it on a table using the sturdy, fold-out stand.

MULTIPLE MODES - Choose from three different displays: AM/PM or 24-hour format; the month, weekday, and date; or the indoor temperature in Celsius or Fahrenheit, plus humidity. Language can be displayed in English, French, or Spanish.

INSPIRED BY DA VINCI'S AGE - Straight out of a Steampunk fantasy, this industrial gear clock is an unusual design melting form and function into one sculptural work of art that makes a cool house clock and fun conversation piece

DESIGNED BY ALBERTO BATANI - Taking inspiration from astronomical pieces, grandfather mantel clocks, German cuckoo clocks, and an atomic countdown machine, artist Batani designed this old fashioned wall clock with modern quartz movement

HIGH-QUALITY ANALOG CLOCK - Hand-cast using real crushed stone bonded with durable designer resin, our unique 3D sculpted mechanical design includes moving metal hands, bold roman numeral numbers, and a rustic faux globe compass and gears

GLOW IN THE DARK ATOMIC CLOCK: See the time, Day or Night!, with the Sharp Atomic Clock with Glow in the Dark numbers and hands. For best results with the Glow in the Dark function: when you first receive the clock, place the clock in sunlight or bright light for 24 – 48 hours. After this time period, the clock will glow in the dark. The clock benefits from exposure to light during the day for optimum glow at night.

ATOMIC ACCURACY: The Atomic clock has a built-in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within one second as it receives daily WWVB updates.

AUTOMATICALLY SETS: Clock resets regularly by radio-control to match the US Atomic Clock in Colorado and adjusts automatically for daylight savings time

Intelli-Time Clock with Indoor Temperature: The vibrant color display shows the current date, time, indoor temperature, indoor humidity level, and moon phase — many aspects of a personal weather station

Simple Alarm Clock with Snooze: The classic alarm noise is perfect for kids, adults, or elders

Integrated USB Port (1.5a): Allows you to wake up to a fully charged phone, tablet, or a different 5V electronic device, a beneficial feature of any home weather clock

⏰TIME & TEMPERATURE PROJECTION: Perfect alarm clocks for bedrooms. The projected temperature changes from indoor temperature to outdoor temperature automatically. Alarm clock projected in a soft red color on wall, it is very clear to view but will not disturb you or your kids when sleeping. The suggested distance of projection on ceiling or wall is 5 ~ 13 ft (1.5 ~ 4 m). Press the "-" button and hold it down for about 3 seconds the projection image will flip 180°.

⏰DUAL ALARMS WITH SNOOZE FUNCTION: Set two separate alarms for different purposes on this projection clock. With snooze function, this alarm clock allows you to get extra five minutes’ sleep time. Press any button except the top button to stop the alarm, and the alarm will automatically stay on for next day. The alarm will automatically turn off if left alone for 2 minutes.

⏰LARGE NUMBER DISPLAY WITH 8-COLOR CYCLE CHANGES: Large number displayed on LCD & wireless inside outside thermometer. Simply pressing the “-” button to adjust the backlit's 4 brightness mode, high - medium - low - out. Choose your favorite color for the backlit by using Loop and Rainbow function.

【LARGE & COLORFUL LCD SCREEN】Comes with a large colorful backlit LCD screen, this digital projection alarm clock displays time, outdoor/indoor temperature (min/max readings included, in °C/°F), humidity, and more in clear digits. 4 levels of brightness are available for optimal vision.

【ADJUSTABLE PROJECTION】Projects time and temperature onto ceiling or walls so you can tell time simply lying on the bed. Adjust the clock projector forwards/backwards, change brightness of projection, and reverse projection in 180° to achieve maximum clarity.

【DUAL ALARMS & SNOOZE】Easily set 2 separate alarms and choose alarm schedule (weekdays/weekends/a full week) on your alarm clock for bedroom. Meanwhile, preset snooze time to sleep for extra 5-60 minutes. Don’t worry, alarms will last 2 minutes with increased volume to wake you up.

Easy-to-read LCD displays time, indoor temperature, date, and day of the week

Atomic radio-controlled clock ensures split-second accuracy and updates itself for Daylight Saving Time

Programmable alarm with audible alert ; Time Zone settings for EST, CST, MST, and PST

Clock will set itself to the correct time automatically by receiving the radio signal from Fort Collins, Colorado. No need to manually change the time from Standard to Daylight Savings and back, it all happens automatically.

Vintage rustic bronze plastic frame with age treatment, Crystal clear glass cover, 13 inch diameter

Simple white dial with elegant black metal hands, Black Arabic numeral analog display, Easy to read

Atomic Alarm Clock - The Atomic Clock has a built in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute of Standards and Technology (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within on second as it receives daily WWVB updates.

The Sharp Atomic Clock (Model - SPC932) can be easily mounted to the wall or can be used on table top or desk with the built in stand. 3 x AAA batteries Needed (not included).

Calendar and Day of Week Display - Always know what day of the week it is with a quick glance. The clock displays the calendar and the day of the week.

THE MODERN WALL CLOCK HAS BEEN PERFECTED. Great for any room at home, work or classroom. The classic black frame with satin finish and modern design compliments any room’s decor. The simple, elegant and versatile style is perfect for your kitchen, living room, bedroom, bathroom, office, meeting room or dining room.

EASY TO READ - Measuring at a full 14” round, our wall clock is easier to read from long distances, day or night. Razor sharp, dense black ink on pure white paper provides the perfect contrast for maximum readability.

PERFECT FOR INDOOR AND OUTDOOR USE - Our custom designed exterior battery cover combined with polycarbonate case and lens makes The Ultimate Wall Clock tough enough to handle the elements and prevent damage from falls.

Thermometer & Humidity Combo: Outdoor clock has built-in Analog hygrometer & thermometer combo. Automatically measures accurate Indoor/outdoor temperature degree from -40℉ to 140℉(-40℃ to 60℃), humidity readings from 0% to 100% RH.

Waterproof:The Premium Rubber Gasket is around the Silent Quartz Mechanism in the back, that locked the cover fits over and sealed. The inside of glass doesn't steam up, because the clock face was be sealed as well.

Elegant Design: Retro Black-Bronze frame , white dial face and large black numbers provide a good view.16" clock face is easy to read even from a distance. It's great for mounting to patio, garden, fence, lanai, garage, screened pool, poolside, farmhouse, yard or backyard.

Alarm clock with analog display that is easy to read time with simple dial design

Atomic clock that automatically corrects the time. When you set the alarm at night, you can stop the second hand by the function of stopping the second hand

Functions: Radio reception function (automatic reception / manual reception), radio wave reception ONOFF function, step second hand, electronic sound alarm, snooze function, light (with afterglow function), second hand stop function (with alarm setting)

🌦️【Atomic Accuracy】The atomic clock has a built-in receiver,that automatically receives the WWVB broadcast signal of the National Institute (NIST) of Fort Collins, Colorado, USA, and the signal will never change because it receives daily WWVB updates.Insert batteries, wait a few minutes as it sets itself【Note】The fragile screen is easy to damage during shipping. If the screen is broken on arrival, please contact our customer service to replace the product.

🌦️【Huge 4.5” Tall LCD Time Display】Atomic wall clock has large 4.5" tall LCDdisplay screen - easy to read, Displays time (hours, minutes, seconds), indoor and outdoor temperature, calendar and day of week.The large wall clock can be hung on the wall or placed on the table for standing, especially suitable for the elderly living at home.Very clear to read from across the room【Note:Smudges on the sccreen are expected but will go away quickly.】

🌈【Wireless Outdoor Sensor】DOVEET atomic clock has a built-in receiver that automatically receives the WWVB broadcast signal of the National Institute (NIST) of Fort Collins, Colorado, USA. It will measure accurately indoor/outdoor temperature & humidity in °F or °C, outdoor thermometer wireless sensor range up to 328ft(100M). Hope this atomic clock will be a nice assistant of your life.

Acctim Radio Controlled (UK & Ireland only) wall clock. Self setting, receiving absolute Atomic accuracy and adjusting automatically to seasonal time changes

Acctim Smartlite Technology - Innovative technology, exclusively at Acctim. Smartlite ; illuminates your display for easy night-time viewing and guarantees alkaline battery life of at least one year

Multi-function display showing time, calendar and indoor temperature

JUMBO DISPLAY - LCD display features 4.5-inch digits for easy viewing

SELF-SETTING/ADJUSTING - Using radio frequencies broadcast from NIST's Colorado Atomic Clock

MULTIPLE DISPLAY MODES - 12 or 24 Hour Display Formats with Indoor Temperature Display in Celsius or Fahrenheit

JUMBO DISPLAY - LCD display features 4. 5-inch digits for easy viewing

SELF-SETTING/ADJUSTING - Using radio frequencies broadcast from NIST's Colorado Atomic Clock. Automatic Atomic Signal- It cannot be turned on/off manually. (Atomic feature only functions in North America)

MULTIPLE DISPLAY MODES - 12 or 24 Hour Display Formats with Indoor Temperature Display in Celsius or Fahrenheit

The Travel Alarm Clock is compact, portable and easy to use. It even syncs itself with the U.S. Atomic Clock to keep you on schedule. The large-format display shows the time, date, indoor temperature and alarm status at a single glance. Setting the alarm is a breeze too, so you won’t miss those early departures. Features a snooze button and and light sensor that dims the backlight at night.

A wall clock with a light that allows you to check the time even at night

Atomic clock that automatically corrects the time. The second hand stop function can stop the sound of the second hand at night

Features: Radio reception function (automatic reception / manual reception), radio wave reception ONOFF function, LED light (automatic lighting function), LED light brightness setting (off/strong/weak), second hand stop function (based on light and dark detection sensor), step second hand and can be used as a place

Copper-finish indoor/outdoor atomic wall clock with thermometer

Measures temperatures from -40 to 120 degrees Fahrenheit

All-weather housing and glass lens

ULTRA EASY SETUP: Simply set the time zone on our smart clock and leave it plugged in overnight - our automatic clock will automatically adjust the time and calendar date with the WWVB radio broadcast by the US National Institute of Standards and Technology (NIST) in Fort Collins, Colorado. Our smart clocks will even self-update for daylight saving time (DST). The atomic feature only functions in North America and works typically at midnight or in the very early hours of the morning.

SHARP COLOR LCD DISPLAY: White backlit and with adjustable screen brightness, our electric atomic clock is easy to read whether it's day or night while not being distracting when you're trying to sleep. Our bedside clock displays the time, date, day, and indoor temperature and humidity in large, vivid, and easily readable digits. Plus, our atomic electric alarm clock features real-time moon phases for those who follow each stage of the lunar cycle.

ALARM WITH SNOOZE FUNCTION: Making the perfect digital clocks for bedrooms, our atomic time alarm clock features a conveniently located snooze button on the top so that you can catch a little extra shut eye on those mornings when it's hard to wake up. The electronic calendar function makes these terrific desk clocks for office, place of business, or home alike. You won't find a better digital atomic calendar clock with indoor temperature readings anywhere!

Clock will set itself to the correct time automatically by receiving the radio signal from Fort Collins, Colorado. No need to manually change the time from Standard to Daylight Savings and back, it all happens automatically.

Vintage black plastic frame, 10 inch diameter, 1.5 inch depth, Crystal clear glass cover

Simple white dial with black metal hands, Black Arabic numeral analog display, Easy to read

Classic Design Retro Alarm Clock：Vintage alarm clock is a classic black big ben alarm clock style, with two metal ears, Silent quartz movement, Glass mirror, Metal Frame 3D Dial.

Best Alarm Clock Used: Atomic clock can be used as kids clock, bedroom clock, bedside clock, girls alarm clock, toddler clock, travel alarm clock, etc.

Loud Alarm Clock for Heavy Sleepers Adults: It's the loudest alarm clock, Silent quartz movement analog alarm clock doesn't make the annoying ticking sound, but its alarm is loud enough to wake you up.

【Atomic Clock with Indoor Outdoor Temperature 】Atomic wall clock with temperature monitor function,The Wireless outdoor sensor (included) transmits the outdoor temperature ( ° C /° F optional)to the large digital wall clock. Which means you can put them inside your patio, backyard, garden or courtyard,easily monitor outside conditions without going out.

【Enhanced Atomic Clock Technology】Atomic clock wall will always be accurate to within one second as it receives daily WWVB updates, just select your time zone at the setting buttons of the clock and turn on the DST if applicable. Automatically updates for daylight saving time,weekday,day,month,time,help you manage regular life.

【8.8'' Large Digital Wall Clock with 8S Backlight】Large atomic wall clock battery operated with an 8.8'' LCD TN high definition slim display, can simultaneously display date, time (12/24H), week,moon phase,indoor&outdoor temperature（° C/° F）,records the daily MIN & MAX data and display tendency.And the digits are big enough for easy-viewing.

【11.4 Inch Display Atomic Clock with Indoor Outdoor Temperature】Larger, clearer screen viewing angles, indoor outdoor temperature (°C/°F), 12/24 hour format, month-week-day display, atomic clock, daylight saving time symbol, alarm clock, low battery indicator

【Atomic Clock with WWVB Function】Additional WWVB function make it is convenient to use, you do not need to adjust time, the wall desk clock will adjust real time everyday with WWVB function on.

【Table Clock or Wall Clock】Two way for placement, easy to use. Table clock with 2 kickstands or wall clock with 3 hanging holes. 4*AA batteries (not included) for base unit and sensor.