There are four different types of time. perception time, man-made time, entropy, and physical time.

In the previous episode of Space Ponder, we pondered that gravity is not a force but rather a consequence of space-time being warped by mass. And now we shall further elaborate on this fascinating subject to understand it better.

So,

there are actually four different types of time.

1.) Perception time ie brains

Time that is constructed within our brains to make sense of the world, it wouldn't be easy to navigate the world if time wasn't linear. You may have seen birds' movements look rather odd.

Also, you may have had a hard time swatting that annoying fly - well, that's because flies perceive time much slower than we, too!

Source https://www.theguardian.com/science/2013/sep/16/time-passes-slowly-flies-study