"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. ...
[Read more]
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)
