If you look at the flow of time, time moves forward to the future. Time does not cycle like a clock. We don't periodically go back to being born, unless you believe in reincarnation. But even with reincarnation, we change into something else; bug, but will not repeat. Reincarnation assumes time is a helix and not a cycle. The Cesium atom and light both cycle and repeat, therefore neither follow the true nature of time; except in the short term. We are using phenomena to measure time, that are not natural expressions of time, since time does not cycle but is unidirectional. It is like measuring linear distance with a circle.

Clock time, which cycles, is a manmade convention which came from the needs of engineering; making a way to measure time that is more compact and less labor intensive. Time only moves in one direction, which is the future. We get older each day and can never repeat the past, like a clock assumes we can do. There is a disconnect.

The cyclic clock is good for work or school where productivity means you need to follow a cyclic routine. Productivity could explain the cyclic clock, whose goal is to alter the nature of time; naturally changing, so people don't change; dogma, but stay in one spot in the assembly line day after day.

If work was in the image of time; always changing to the future and never repeating, work would be more like games and sports, which are unique; changes, each time we play the game. The clock has to harness the spontaneity of time to make it cycle, which takes work/energy. This hidden energy is like hidden wires for a magic trick.

The concept of entropy, on the other hand, is much closer to the concept of time, compared to energy, atoms and clocks. Entropy will spontaneously move in one direction; future, while never spontaneously cycling backwards, unless we add energy/work to make it go backwards. The EM force is cycling and not going in one direction.

A better phenomena to measure time dilation would be an entropy clock, such as the rotten fish clock. In this clock, time is measured by the irreversible decay of the fish, until it stinks a certain amount at 10 meters. When the cat looks up, it is one unit of time. The entropy clock does not cycle, since we can't un-stink the fish even if we try. This is how time works.

We can slow the flow of time, within an entropy clock, with refrigeration. Refrigeration lowers the energy that is available for the entropy increase. If there is time dilation, one would expect that the flow of time in the entropy clock should also slow, such that it will take longer for the fish to stink; decays slower. The question becomes is there any correlation between gravity and chilling, since both can slow an entropy clock?

The gravitational potential energy is lower the denser the matter is packed. While the gravitational potential energy is higher the more spread out the matter is. We will get a deep space-time well from a neutron star of mass M, but a shallow space-time well from a gas cloud of the same mass M. In terms of GR, less gravitational potential energy; denser, means more time dilation. Less potential energy; temperature, also means more chill.

If the universe is expanding then there is an increase in gravitational potential, which means the entropy clocks should all be speeding up.