According to our current understanding of physics, time travel using light is not possible. While light does travel at a specific speed, which is the fastest speed known to us, it does not enable us to travel through time.
Time travel is a complex topic, and there are different theoretical concepts and possibilities within the realm of physics. However, none of these concepts involve using light as a means of time travel. The theory of relativity, particularly the idea of time dilation, does allow for differences in the passage of time depending on the relative speeds of observers or the strength of gravitational fields. But this does not provide a direct mechanism for traveling back or forward in time.
It's worth mentioning that even if a method of time travel were to be discovered or proposed in the future, it would likely involve significantly advanced scientific understanding and technologies that are currently beyond our reach. As of now, time travel remains purely speculative and is a subject of ongoing scientific investigation and exploration.