"Night or nighttime (sp. night-time or night time) is the period from sunset to sunrise in each twenty-four hours, when the Sun is below the horizon. The exact time when night begins and ends (equally true with evening) depends on the location and varies throughout the year. When night is considered as a period that which follows evening, it is usually considered to start around 9 pm and to last to about 5 am. Night ends with coming of morning at sunrise .
The word can be used in a different sense as the time between bedtime and morning. The word ´night´ is used as a farewell ("good night") and sometimes shortened to "night." Unlike "good morning," "good afternoon," and "good evening," "good night" is not used as a greeting." - (en.wikipedia.org 03.11.2019)
en
