I would propose that technically it commences at midnight, but that the definition falls in keeping with another remedy here that means It is based on how we sense about this. BVernon "Day and night time" is more ambiguous if the "time" is meant to be tightly bound to "night" https://beauvi207.topbloghub.com/44292808/the-ultimate-guide-to-night-gangnam-퍼펙트가라오케-karaoke-guide