Are you aware of the twin paradox? Do you believe that it represents something significant? In it, an object changes its rate of motion through space compared to the other. For example, take a pair of twins at birth and send one off at a rate of motion near the speed of light for as long as it takes for the other on earth to grow to old age. Once this shift in rate of spatial motion ends, we can examine the space and time considerations of the person who never left earth and the person who left earth. One will have aged more slowly than the other. One will have reached old age, and the other will still be a baby. You seem to be saying that time is only about the cycle of the earth about the sun, and nothing more. You therefore seem to be claiming that they are the same age. How relevant is this to the fact that one has lived through his time and is about to die of old age and the other is still a baby and has a lifetime of time ahead of him. You would focus on what is basically irrelevant, the cyclic motion of the earth about the sun, which is unrelated to either person, unrelated to either unit of space-time.