Best Atomic 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)

Wall Clocks 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.

Autoset Battery Operated Digital Wall Clock - 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 hanging or table standing 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 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 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

Large LCD Digital Wall Clock with Big Numbers - Easy to Read. WallarGe digital wall clock has a high-definition LCD screen measures 14x6 inch and the time display is 8.1x4.3 inch, the large display helps you read the time from many angles at a room distance. You can also read the indoor temperature and date on screen for full information.

Digital Wall Clock Battey Operated– Easy to Setup. The clock is supported by 4xAA battery (not included). There is a low battery indicator display on screen when battery is not power enough, no more worries about forgetting to replace new batteries. The function buttons are at the back which are easily to set.

AUTO DST – Adjust Time Automatically in Daylight Saving Time. With AUTO DST on, time will go forward or fall back 1 hour to be correct automatically. It could be turned off permanently if for no need by setting manually.

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.

⏰TIME & TEMPERATURE PROJECTION: Perfect alarm clocks for bedrooms (NOT ATOMIC). The projected temperature changes from indoor temperature to outdoor temperature automatically. Alarm clock projected in a soft red color on ceiling or wall is easy to see throughout the room. Adjustable projection angles and brightness - It can be reversed by 180 degrees for optimal viewing and meet different users’ preferences.

⏰INDOOR/OUTDOOR THERMOMETER GAUGE & HUMIDITY MONITOR: Equipped with professional grade inside outside thermometer and humidity monitor, the clock provides the most accurate measurements. Displayed with Indoor/outdoor temperature and humidity, allows you to be aware if adjustments are necessary. Ideal alarm clock for home, keeps you and your family's living conditions optimal.

⏰WIRELESS COLOR WEATHER STATION: 12/24 hour, date, and weekday in large number; Clear weather patterns, mold alerts and mold risk are displayed on large 4.5” LCD screen. Digital weather station predicts the weather for the next 12 hours as well as the barometric pressure trend and temperature trend. Adjustable backlit dimmer (high- medium - low - out) with DC power adapter, enables you to set the display to a brighter setting in daytime and softer one at night.

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

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

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

【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.

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

★【 Elegant & Smart Self-illuminated Clock 】: This elegant 18 Inch Premium LED clock is built with bright warm white lights and a smart light sensor on clock face which detects brightness/darkness of the ambient environment and automatically turns on/off lights in low/bright light. (does not light when switched to OFF).

★【Water Proof In/Outdoor Clock】: This premium outdoor clock is sealed with front and back rubberized gasket for protection from water and other outdoor elements.

★【 Premium Thermometer & Hygrometer】: This clock features a Thermometer with Fahrenheit/Celsius scales and a Hygrometer. (Premium type allows you to slightly adjust and calibrate）Allow the Thermometer & Hygrometer at least 3 hours to fully adjust itself to the tell the temperature and humidity in the environment.

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

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.

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.

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)

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.

MANTEL CLOCK: The Adelaide Mantel Clock features a sculpted wrought-iron frame with antique warm-grey finish as well as a Windsor Cherry finish and decorative molding wrapped base to compliment your home decor.

DURABLE: This clock has a sturdy metal frame to relieve stress in a busy household. Place it above your fireplace in the living room for a classic decorative accent piece with black Roman numerals, antique-finished serpentine hands and convex glass crystal to stand out over an aged dial.

CHIMES: Easily tell time with single-chime movement that plays the Westminster chime to strike each hour. Set the automatic nighttime chime shut-off for convenient volume control to have in any room.

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

🌦️【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.

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

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

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

ULTRA EASY SETUP: By setting the time zone on the smart clock and leaving it plugged in overnight, our atomic clock will automatically adjust the time and calendar date using the WWVB radio broadcast from the US National Institute of Standards and Technology (NIST) in Fort Collins, Colorado, while also self-updating for daylight saving time (DST); note that the atomic feature is only available in North America and typically operates at midnight or in the early hours of the morning.

SHARP COLOR LCD DISPLAY: Featuring a white backlit display with adjustable screen brightness, our electric atomic clock is designed for easy reading day or night without causing any disturbance during sleep; with large and vivid digits, it displays the time, date, day, and indoor temperature and humidity, and also offers real-time moon phases for those who track the lunar cycle.

ALARM WITH SNOOZE: Crafted to serve as the ideal bedroom digital clock, our atomic time alarm clock includes a snooze button at the top for added convenience on mornings when getting up is a challenge; with an electronic calendar function, it is also an excellent choice for use as desk clocks in offices, businesses, or homes, and offers superior indoor temperature readings - making it the perfect digital atomic calendar clock for any setting.

Size: 17.7 x 13.6 x 3.2 inches (45.0 x 34.5 x 8.1 cm); Weight: 4.4 lbs (2

Power supply: 2 x AA batteries (sold separately)

Second hand: Step second hand

Copper-finish indoor/outdoor atomic wall clock with thermometer

Measures temperatures from -40 to 120 degrees Fahrenheit

All-weather housing and glass lens