No, time isn't something that really exists. It's just the perception of change.
I assert that change exists and time is a construct of our imaginations. An illusion. The idea exists, but it's not the same as the present. It's like zero or nothing. Nothing can't exist or it would be something, but we can imagine it as a concept and use symbols to represent the idea.
The past and future literally don't exist other than as constructs of mind. The universe is continually coming about and fading away. It's a happening, not a thing. It appears to us like the flow of a river.
There are "moments" like frames of a film movie that are being replaced at an extremely high rate, maybe the Plank time unit. A movie looks continuous, but is static frames continually replaced. Also like the refresh rate of a computer monitor.
I sometimes see everything come to a stop and start again frame by frame through meditation. It's no doubt a phenomenon of perception, where my rate of experience of the flow of moments is radically changed. That's what we consider time, the way we experience the flow of moments.
It's all a matter of perception and we all have somewhat different sampling rates and "bit depths" or bandwidths. Like digitizing an analog music signal, where the signal is broken up into specific values according to a specific rate. This gives us our perceptual resolution. Some people are low resolution and some are high.
We can change it, too, through meditation and other practices. We all have our own sense of time, which is always fluctuating to some degree. If you take a car ride through an area you've never been to, time seems to go slowly because there's so much information to process. If you've taken the drive many times, you don't process everything you see, but acknowledge large chunks or certain landmarks and time seems to go by more quickly.
The present exists and has a dual nature. To change and to stay the same. There's a dynamic dance between the two. If nothing changed, every moment would be the same and if nothing stayed the same, it would be complete chaos and no form would be possible.
As the present moment is replaced by the new present moment, the old one fades away neurologically and gives the impression of movement, which gives us the impression of a flow. We are surrounded with cycles that repeat and give us a way to measure this sense of time. We observe the cycles of nature and make devices to keep track of cycles, like the vibration of quartz crystals when an electric current is applied to make a digital watch.
Change is predictable to a degree and so our imagined future is useful as is the construct of the past. When we construct an image of a present that once was, we call it the past and when we construct an image of a present that might be, we call it the future.
Sorry this is structured so poorly, but I'm somewhat distracted right now.