I would suggest that technically it commences at midnight, but that the definition falls according to Yet another answer listed here that suggests It truly is according to how we experience about it. BVernon "Day and night time" is more ambiguous whether the "time" is intended to be tightly sure https://erickudksz.smblogsites.com/37934090/5-tips-about-night-gangnam-퍼펙트가라오케-karaoke-guide-you-can-use-today