Doomsday Clock
Bulletin of the Atomic Scientists
85seconds to midnight · 2026
Two clocks
One counts down to midnight. The other tells you the time.
The Doomsday Clock has been set 29 times since 1947. Here every setting sits on a single dial, the oldest near the centre and the latest at the rim, so the hand grows as the years pass. Beside it, the Daybreak Clock shows the time where you are, the only time anything can be done. An act taken now does not stay where it started. It carries forward, draws others in and grows with the years, building your own future and the one we share.
Doomsday Clock
Year rings
Later settingsWhen the slider is set to an earlier year, the settings that came after it stay on the dial in grey.
Between settingsSteps holds each setting until the next, as the Bulletin made them. Smooth glides the hand from one to the next; the numbers still show the last real setting.
Play speed
Hand
Daybreak Clock
Readout
Seconds hand
Sand
Numerals
Needles
Notes under the clocks
Daybreak Clock
Your local time
--:--:-- ·
Now is the time to build the future we want.
Since you arrived, 0 s ago
- babies born
- 0
- kW of solar installed
- 0
- kW of wind installed
- 0
- electric cars sold
- 0
Every grain in the clock is a second you have spent here. The world keeps building while it falls.
The past has set.
The future is still branching.
Now
Past Future
Crystallised. Thousands of histories were possible. Every branch but one stopped before today, and that one is ours.
Open. From this point the paths spread out again. Which of them we take is being decided now.
A Line Through the Possible
Nothing in the present was bound to be. It stands at the end of countless forks: decisions and hesitations, accidents, encounters, a door opened or left shut, a storm that came a day early, a gene that copied itself wrong. At each one, every way but one closed, and the world went on along the one that was left.
The red line is that one way. Read it as you like. It can be your own life. You began as a single cell, made with one of hundreds of millions of sperm, and behind you runs an unbroken chain of ancestors, every one of whom lived long enough to have a child. It can be the course of a civilisation. It can be life on Earth itself, close to four billion years of it, which came through five mass extinctions and never once broke off. Around it, in grey, lies everything that could have been. Of all the species that have ever lived, more than ninety-nine in a hundred are gone.
Physics names a floor for time, the Planck time, about 10−43 of a second. Below it, no theory we have can say what a moment is. Counted in those smallest instants, a single heartbeat holds some 1043 of them. A human life turns on a handful of decisions that change everything, and on countless small ones every day. Most of the line is not ours to draw. Luck, accident, skill and talent mix with the momentum we inherit: genes, a family and its habits, a language, a culture, the pull of the people around us. Much of the path is bent before we ever touch it.
The past has crystallised. It is what it is, like it or not, and no amount of hindsight will move a single one of its forks.
The future has not happened. Not one of its branches exists yet.
Between the two lies the present. The brain binds it into a window of about three seconds, close to the length of a line of verse in many of the world's poetic traditions. That narrow window is where the line is still being drawn. It is the only place anything has ever been done.
Hindsight reads the red line. Foresight scouts the fan ahead. Both are arts to cultivate, patiently, the way a navigator learns the charts and the weather, and both answer to the hand on the tiller. That hand moves today.
What you decide now is the next fork.
What will you do today?