I needed some more details of how the photon experiences time, and found this (first good google result). But useful. https://medium.com/starts-with-a-bang/ask

I needed some more details of how the photon experiences time, and found this (first good google result). But useful. https://medium.com/starts-with-a-bang/ask-ethan-109-how-do-photons-experience-time-94756eab8bf9 https://medium.com/starts-with-a-bang/ask-ethan-109-how-do-p...