The twilight hours

Why does everything become clear in the twilight hour?
When most brains frazzle out and streetlights gain power
As if my mind is switched in to the same system
I find my neurones connect and my ears really listen

This wouldn't be an issue, but most people work on daylight time
Like their minds and the sun can resonate as a rhyme
So I try, I really do, to pretend that I'm the same
But here I am, working in my productive hours again

Stuck late, finally able to work with little procrastination
Whereas in hours hence I was following the smallest deviations
Unable to stop my thoughts from straying to new places
Yet under the moon I see train tracks lain down in pale white laces

What do I sacrifice, by following a schedule that's not my own?
What ideas would I have developed which I have never grown?
I'm not quite sure. Yet I know if I am tasked with much stress
I will solve it if I have to, by working the time I work best

Dear future Harry. 
Don't do another D.Phil. 
Yours, Harry who is working in the lab at 9:30pm.