Is time an illusion?

Time and space are beyond the comprehension of humans who cannot grasp infinity.

As Einstein explained time is relative therefore everyone´s concept of time is different!

According to current theory

time ***as we know it***

is an integral part of our Universe

and a necessary characteristic of everything that exists in our Universe.

Many people who contend "time is an illusion"

confuse time itself (a physical reality)

with ***the measurement of time***

(more precisely: with the PERIODS of time that make up any time measuring scale)

which thing is certainly an artificial construct of man.

These people typically argue

that a day on Mars

is not the same as a day on Earth

and a year on Mars

is not the same as a year on Earth

and

therefore

we can see that time is mere illusion, a mere fabrication.

Again: what they are missing here

is that it is the MEASUREMENT of time

the units defined to measure time

that is the fabrication

and not time itself.

Time is a fact.

Revelation 10:5-6 

And the angel which I saw stand upon the sea and upon the earth lifted up his hand to heaven, [6] And sware by him that liveth for ever and ever, who created heaven, and the things that therein are, and the earth, and the things that therein are, and the sea, and the things which are therein, that there should be time no longer:

No, it's a construction. A means of describing the experience of a being who exists only in a linear way.

Yes and no. FACT

Time and Space are real things, we measure time by the Sun that makes our life into days and when gone into night. FACT

They can be broken or divided into moments of time, we call this hours, seconds, mins, days, weeks, months, years, etc. FACT

 Yes one designed and set up by mankind..... Dogs for example do not need clocks at all ya see... Only people require them in reality.

It's definitely relative and possibly an illusion or simply a matter of our perception, but the truth of the matter is that this is a physics question and not one for R&S.