What interesting responses, I think parts of the responses deserve a unique subject topic of their own. Olivia, you are correct, one needs the proper focus and definition to discuss a topic. Using the principle of making the complex simple, from the point of view of the material universe, time is one of the fundamental dimensions of the known material universe, along with space, matter, and energy. As a working definition, time arises simultaneously with space, matter and energy. Distance and movement are correctly described with an aspect of time, such as miles per hour, or light-years, or hertz per second. Thus time cannot be separated from movement, and since all material has movement, even vibration, time is integral to matter. In this state it may be relative, (Einstein) but it exists. But where do they arise from?
There is another, more mysterious level to time. In the Path of Life, it is figuratively represented as the “father” of PanGu, (the “mother” being space); the yin/yang symbol comes to mind. For me, time is inseparable from the other elements of the material elements of the universe, however, a state of non-material could transcend the material universe. That state we sometimes call spirit; others may call it infinite consciousness. Now if we view the universe from that point of view, the time element, and the other material elements, may need to be reconsidered. Could we say that time doesn’t exist when in fact it seems to be a part of the known universe. Maybe, because usually our reference point is from the material point of view, from the spirit point of view, time might be something very different from our regular thinking. I don’t claim to be an expert.
So when we talk about time, space, energy, and matter, (and maybe anything else) we need to establish the proper perspective. Are we looking at the universe from the spiritual or the material point of view? Of course that brings another question to mind, is there really a difference?