Current Definition 

In encyclopedias, one cannot really say that time is defined, and when it is, it is closer to a sequence of events than to the measurement of time — its chronometry. A year, a day, a minute… This chronometry is only possible relative to precise references. 

References that are not other than the circadian pace of day and night that impact and rhythm the life of living beings.

References that now exist throughout the universe, since the cesium atom is used to measure the second — even though its origin remains a human convention and the second itself expresses a duration, not human chronometric time.

So one could live on Mars using the same time we use on the Earth by convention. A watch, based on cesium pace, could tell him when to stop working or watch TV. The only absolute necessity would be to keep contact with Earth in order to check, from time to time if their time systems are correctly synchronized to the circadian time. 

It is then evident that it is technically realizable as long as a logical limit of communication delay is not reached — delay that could affect the precision of the synchronization. This shows that this little interplanetary arrangement is not a universal solution and that still, cosmic time does not exist.

We can add that time remains a human interpretation and chronometry of duration — and that, without Man, time exists nowhere. Not even on Earth. 

Succession

What does exist, however, is Succession. 

This sequence of events gives the idea of past and future. A glass that breaks cannot reassemble itself. Indeed, once it has broken, we can say: it was intact (past), and now (present/future) it is shattered. 

This succession gives the impression of time passing, but without chronometry it is not the useful time indicated by our watches; it is simply a Succession of events. 

The confusion is easy, but the difference is immense. Our prehistoric ancestors saw that days followed one another, that the dead did not wake up, that water flowed in one direction in streams and rivers. But they had no watches. They did not measure time. They had no appointments at 3:00 p.m. At best, they could agree to meet at sunrise or sunset — nothing more.

And it is precisely this reference— sunrise or sunset — actually the circadian periodicity, that makes time measurement possible.

It seems far from inconsequential that the word "precession" — if it were the antonym of succession — does not exist.
This is a kind of confirmation that such a movement has never been needed to explain the universe. It is not proof of anything, but we must admit that it is quite interesting.

the Circadian Periodicity

What we wear on our wrist is the calculation of this periodicity, divided into units of measurement: hours, minutes, seconds. Time zones are interpretations of this periodicity, based on the dance of the Sun and Earth for each latitude. 

People wake with the day in America, and in France as well — at the same local time, but not at the same moment. Universal time therefore does not exist. On the contrary, it exists only for this pin‑head called Earth, hidden among trillions of football fields. Worse still, it exists only for the humans who live on it. Animals do not care.

Time zones are the best evidence of the circadian periodicity as they measure the sleep and awake time of humans all around the world.

the Mistake

Chronometric time is a key value for many physical parameters and equations. It is the basis of acceleration and velocity, which in turn allow us to calculate force, thrust, and so on. So total was the misunderstanding even for Einstein, who named his “spacetime,” whereas its true name should have been closer to “local-space‑time” since time exists only for humans, locally, and not in the universe.  

ΛCDM itself, when it calculates the age of the universe as 13.7 billion years, speaks of years that did not exist before the appearance of the Earth and the Sun. It obviously gives an idea of duration in a human's mind but says nothing about the real age of the universe.

The Light Years

Since distances are expressed in kilometres travelled by light in a year, we assume that cosmic distances are a question and a function of time. This is why this passage is of immense importance for the understanding of cosmology — or rather, for its misunderstanding, because this mistake calls the whole of it into question.

The light-year is a human mind unit.

The same is true of the speed of light. It is usually presented as a universal constant — 299,792,458 metres per second. But the metre and the second are human units. The second is defined by the circadian periodicity of life on Earth. The metre is defined by the distance light travels in 1/299,792,458 of a second. Each unit refers back to the other, and both refer back to the Earth and its humans.

The speed of light is therefore not a constant of the universe, but a human convention — a circular one.

Nothing is measurable in the universe without human metrics.