I used to meditate at night because it was the only time I could do it … or at least that was the excuse I gave myself. Actually while I was at Bukkokuji Temple in Obama, Fukui the routine was to meditate once in the morning (twice during winter) and three times at night. So my belief for a long time was that night meditation is the best.
But this is simply not true.
For lay people a morning session is usually the best because it is the time when we have least to do, less rushed by life. It is also quiet as everyone is still asleep and therefore one can concentrate better. One is also fresh from rest.
At the Temple as monks one can concentrate because that is the life monks have chosen, to devote their lives to save all others. Lay people do not have this “luxury”.