As my time is mostly occupied with other things during the day, most of my listening, serious or casual, is late at night.
Aside from a cleaner electrical grid, without the clutter of the usual cacophony of daytime noise, subtle sounds become more vivid.
During the day, I have to strain to hear the ticking of any of our clocks. Setting on my audio sofa, at night (If I listen for) I can clearly hear the distinct and unique ticking of nearly every clock in the house or the click clack of the dogs nails as he walks across the floor. When the music goes on those sounds disappear and I am pulled into the performance and become aware of the many subtle nuances of instruments and vocals, that the quiet and calm of the night allows me to appreciate.....Jim