extremely accurate reference clock used as a standard for timekeeping
How an accelerating Earth led experts to adopt the leap hour : International delegates agree leap second no longer tenable, but first leap hour not likely to ...
theguardian.com/science/2026/oct/15/times-up-for-the-leap-second-as-scientists-swap-it-for-the-leap-hour
Scientists just designed the world’s most accurate clock: The new atomic clock from physicists in Singapore has crushed all previous records.
fastcompany.com/91618468/scientists-just-designed-the-worlds-most-accurate-clock
Replacement for the atomic clock: World's first nuclear clock ticks in Vienna
t3n.de/news/erste-atomkernuhr-welt-wien-1767344/
Scientists report world’s first working nuclear clocks: In two papers in Nature, scientists from Europe and China have now reported the world’s first working ...
thehindu.com/sci-tech/science/scientists-report-worlds-first-working-nuclear-clocks/article71537614.ece
The most accurate clock in the world is now in Singapore: A small research team from the National University of Singapore has built the most accurate atomic ...
telepolis.de/article/Die-genaueste-Uhr-der-Welt-steht-jetzt-in-Singapur-11473966.html
Making every second count: The creation of Indian Standard Time at Delhi’s NPL: IST becomes India’s legal time from 2027, realized at NPL Delhi with an 8-clock ...
thehindu.com/news/cities/Delhi/creation-of-indian-standard-time-at-delhi-npl/article71512224.ece
The world's most accurate clock is currently in Singapore: The new optical atomic clock is so precise that it can even detect height differences of just a ...
derstandard.at/story/3000000341123/die-genaueste-uhr-der-welt-steht-im-moment-in-singapur
Scientists build world's most accurate atomic clock: Take a second and turn it into trillions of moments. Measure each one. That's how precisely an ...
phys.org/news/2026-09-scientists-world-accurate-atomic-clock.html
Don't miss a beat! Here are yesterday's top stories:
A hidden vulnerability in animal navigation and a deep challenge to physical intuition stand ... Show more
How India’s new IST rules aim to put the country on one clock: India already follows IST, so what changes with the new rules? We explain what machines and ...
indianexpress.com/article/explained/explained-sci-tech/indian-standard-time-ist-rules-2026-10857374/
ISRO’s NavIC system can no longer provide navigation data independently: Government
indianexpress.com/article/india/isros-navic-system-can-no-longer-provide-navigation-data-independently-government-10811286/
Nuclear clock versus atomic clock: A new chapter in time measurement begins: The nuclear clocks from Europe and China don't yet tick as regularly as the best ...
nzz.ch/wissenschaft/konkurrenz-fuer-die-atomuhr-in-zwei-neuen-uhren-geben-atomkerne-den-takt-vor-ld.10015022
A Brief History of Atomic Time: Since the first societies, humans have needed to keep track of time.
nist.gov/atomic-clocks/brief-history-atomic-time
Space Jun 26
What time is it on the moon? The US and China disagree: The U.S. and China, the two largest space powers, have different opinions about what time it is on the ...
space.com/astronomy/moon/what-time-is-it-on-the-moon-the-us-and-china-disagree
Lunar Atomic Clock Laser Promises Ultra Stable Time: A new proposal turns darkened craters into homes for incredibly stable lasers
spectrum.ieee.org/lunar-lasers-optical-atomic-clock
Thorium-229 Nuclear Clock: New Technology Challenges Atomic Clocks: Researchers have achieved a real breakthrough in the development of a nuclear clock ...
winfuture.de/news,159311.html
Lunar Atomic Clock Laser Promises Ultra Stable Time: A new proposal turns darkened craters into homes for incredibly stable lasers
spectrum.ieee.org/lunar-lasers-optical-atomic-clock
Each atom in the universe might be unique: Long-held assumptions tell us that atoms with the same number of protons, neutrons and electrons are indistinguishable ...
scientificamerican.com/article/each-atom-in-the-universe-might-be-unique/
Japan aims to set first new global standard for second in 63 years: TOKYO/KYOTO, Japan -- Japanese precision equipment maker Shimadzu and the Riken national ...
asia.nikkei.com/business/science/japan-aims-to-set-first-new-global-standard-for-second-in-63-years
Atomic Clocks: Exquisite Sensors for More Than Just Time
nist.gov/quantum-information-science/atomic-clocks-exquisite-sensors-more-just-time
When clocks run fast and slow at the same time: Relativity and quantum physics have so far had completely different concepts of time. But modern atomic clocks ...
spektrum.de/news/quantennatur-der-zeit-wenn-uhren-vorwaerts-und-rueckwaerts-laufen/2322036
Physicists revive 1990s laser concept to propose a next-generation atomic clock: Researchers in the US and Germany have unveiled a theoretical blueprint for an ...
phys.org/news/2026-04-physicists-revive-1990s-laser-concept.html
We all feel that time passes. But we can neither hear it nor taste it. And it may even be less continuous than we think. Some physicists suspect that time is ... Show more
Quantum Sensors in Space: Can quantum sensors detect Earth's magnetic changes from space? Discover how ESA's new mission could impact navigation and climate ...
spectrum.ieee.org/quantum-sensors-space
Ytterbium atomic clock could open a new window on fundamental physics: For the first time, an international team of physicists has successfully harnessed a rare ...
phys.org/news/2026-04-ytterbium-atomic-clock-window-fundamental.html
The Big Questions of Science: What is Time, Ekkehard Peik?: We feel time passing. But we cannot grasp it. This time it's about the next generation of time ...
spektrum.de/podcast/ein-gespraech-mit-ekkehard-peik-ueber-unser-verstaendnis-von-zeit/2317889
Daylight Saving Time: Where the Time Comes From: The atomic clocks at the PTB in Braunschweig are the timekeeper for clocks throughout Germany ...
heise.de/hintergrund/Zeitumstellung-Wo-die-Uhrzeit-herkommt-9990348.html
'Working for operationalization,' Indian Govt says on defunct NAVIC satellite fleet
wionews.com/india-news/-working-for-operationalization-indian-govt-says-on-defunct-navic-satellite-fleet-1774442630956
Why tiny atomic clocks may hold the key to China mass-producing cheap swarm drones
thestar.com.my/aseanplus/aseanplus-news/2026/03/22/why-tiny-atomic-clocks-may-hold-the-key-to-china-mass-producing-cheap-swarm-drones
UPSC Essentials | Daily subject-wise quiz : Science and Technology MCQs on Atomic clocks, OSIRIS-REx mission and more (Week 154)
indianexpress.com/article/upsc-current-affairs/upsc-essentials/upsc-subject-wise-quiz-science-and-technology-week-154-10589244/
“Small, but mighty” is exactly how we describe this atomic clock.
This is the world’s smallest atomic clock, which has been recognized by the Guinness World ... Show more
Chip-Scale Clocks | NIST
Chip-Scale Clocks | NIST
Isro's NavIC down to 3 satellites: What it means for India's GPS ambition: India's indigenous satellite navigation system NavIC faces fresh reliability concerns ...
business-standard.com/india-news/isro-navic-satellite-failure-irnss-1f-atomic-clock-navigation-system-126031600895_1.html
NavIC satellite loses its atomic clock: What this means for India’s bid for its own GPS
indianexpress.com/article/explained/explained-sci-tech/navic-satellite-atomic-clock-failure-isro-gps-10583590/
Putting Einstein to the Test With the World’s Most Accurate Clocks: Powerful new atomic clocks could revolutionize how we measure gravity, with big benefits for ...
nist.gov/blogs/taking-measure/putting-einstein-test-worlds-most-accurate-clocks
Trial helps accelerate next gen atomic clock for UK military: A trial led by the Defence Science and Technology Laboratory (Dstl) has supported the development ...
ukdefencejournal.org.uk/trial-helps-accelerate-next-gen-atomic-clock-for-uk-military/
Optical atomic clocks poised to redefine how the world measures seconds: Time is almost up on the way we track each second of the day, with optical atomic clocks ...
phys.org/news/2026-01-optical-atomic-clocks-poised-redefine.html
UPSC Essentials | Daily subject-wise quiz : Science and Technology MCQs on atomic clock, Kudankulam Nuclear Power Plant and more (Week 145)
indianexpress.com/article/upsc-current-affairs/upsc-essentials/upsc-subject-wise-quiz-science-and-technology-week-145-10473794/
NIST warns that its NIST-F4 atomic clock lost track of time after a power outage: The National Institute of Standards and Technology recently warned that an ...
techspot.com/news/110683-nist-warns-nist-f4-atomic-clock-lost-track.html
After power outage, internet clock is off by four millionths of a second - | what problems this causes
t3n.de/news/nach-stromausfall-geht-internetuhr-vier-millionstel-sekunden-falsch-welche-probleme-das-mit-sich-bringt-1722775/
Colorado power outages disrupt atomic clock in Boulder: Power shut off across Colorado last week as hurricane-force winds swept across the state ...
denverpost.com/2025/12/21/colorado-boulder-power-outages-nist/
dlvr.it Dec 21 25
NIST tried to pull the pin on NTP servers after blackout caused atomic clock drift
theregister.com/2025/12/21/nist_ntp_outage_warning/
lists.nanog.org Dec 20 25
NTP at NIST Boulder has lost power - NANOG - lists.nanog.org
lists.nanog.org/archives/list/[email protected]/message/ACADD3NKOG2QRWZ56OSNNG7UIEKKTZXL/
This clock could run for 3 trillion years without slipping a second. Inside U of T’s atomic clock breakthrough
thestar.com/news/gta/this-clock-could-run-for-3-trillion-years-without-slipping-a-second-inside-u-of/article_ff4d08d6-5a21-4a7e-9dc2-48a2c1c18443.html
How fountains of atoms became the backbone of international timekeeping.: Physicist Christophe Salomon developed a new type of atomic clock. He has now been ...
derstandard.at/story/3000000296748/wie-fontaenen-aus-atomen-zum-rueckgrat-der-internationalen-zeitmessung-wurden
New Atlas Nov 03 25
Royal Navy installs quantum clock in robotic submarine: The Royal Navy is pioneering underwater navigation! Learn how the new Infleqtion quantum clock installed ...
newatlas.com/military/royal-navy-quantum-clock-submarine/
Clocks change on Sunday - but here's why losing a nanosecond in space is catastrophic
news.sky.com/story/clocks-change-on-sunday-but-heres-why-losing-a-nanosecond-in-space-is-catastrophic-13455342
New approach to gravitational wave detection opens the milli-Hz frontier: Scientists have unveiled a new approach to detecting gravitational waves in the ...
phys.org/news/2025-10-approach-gravitational-milli-hz-frontier.html
New exhibition in Science Centre aims to demystify quantum science: The exhibition will run for a year, and access to it is included in the price of a regular ...
straitstimes.com/tech/new-exhibition-in-science-centre-aims-to-demystify-quantum-science
Move over atomic clock, there may soon be a new timekeeper in town.
Scientists are working on a clock that would tap the secrets hidden inside the atomic ... Show more
Earth is spinning faster, leading timekeepers to consider an unprecedented move: Earth has been spinning faster for the past few years — a trend that could lead ...
edition.cnn.com/2025/07/21/science/earth-spinning-faster-shorter-days
New Atomic Fountain Clock Joins Elite Group That Keeps the World on Time: NIST scientists have published results establishing a new atomic clock, NIST-F4 ...
nist.gov/news-events/news/2025/04/new-atomic-fountain-clock-joins-elite-group-keeps-world-time
interestingengineering.com May 01 25
US scientists debut atomic clock that stays true for 100 million years straight: IST’s new atomic clock, NIST-F4, is so precise it would only be off by one ...
interestingengineering.com/innovation/us-scientists-debut-atomic-clock
While most people might associate lasers as something seen in a sci-fi movie or even as a cat toy, they mean much more to NIST and the science community ... Show more
Optical Frequency Combs
Optical Frequency Combs