Chronoswiss Watch Flying Regulator Night & Day CH-8761R-BKBK.åÊLooking at the Flying Regulator Night and Day, the unusual and intricately designed day night display at the 9 o clock position is the first thing to catch the eye. It was embedded in a half dome and given a gleaming metallic look. The stars on the night side even glow in the dark thanks to their Super LumiNova coating, a feature that is not just for romantics.