According to the theory of special relativity, time dilation occurs as an object's velocity approaches the speed of light. As an object accelerates closer to the speed of light, time dilation becomes more pronounced, and from an observer's perspective, time appears to slow down for the moving object. However, it is important to note that time dilation only applies to objects with mass. Photons, which are massless particles, do not experience time in the same way as objects with mass.
Photons always travel at the speed of light in a vacuum, and from their perspective, their journey is instantaneous. Since they travel at the maximum speed allowed by the laws of physics, time does not pass for them. This means that, in a sense, they do not experience time.
This conclusion can be understood by considering the implications of special relativity. As an object with mass approaches the speed of light, its energy and momentum increase, requiring more and more energy to further accelerate. For a massless object like a photon, which travels at the speed of light, it already possesses the maximum energy and momentum allowed, and therefore, it cannot experience the passage of time.
In summary, photons, as massless particles, do not experience time from their own perspective. They travel at the speed of light and their journey is instantaneous. The concept of time, as we understand it, does not apply to photons.