What's the best time for you to write? I always find myself tempted to write at midnight.

Me too. The quiteness of the night helps me focus and there's just no more disturbance, everybody's asleep; even the streets are quite.

Writing needs concentration and best time to concentrate is silence, relaxed mind and eagerness to write. Mostly I do it at day time but occasionally I receive some important points in my mind but don't have time to write then I prefer to note it on my NOtepad. Later on I elaborate these points in my writing.

when in an elevated state of mind, then edit sober.