Nychthemeron

The expression Nychthemeron or Nykthemeron (also day night ; ancient Greek νυχθήμερον , derived from νύξ nyx for " night " and ἡμέρα hēmera for " day ") denotes a period of 24 consecutive hours, which mostly refers to the section from dusk to dusk, thus composed of night and day. In the literature, day night is also often used in the event that the period is not defined with the usual term "day" or should not be confused with the clear day .

Everyday language

In some Germanic languages there is also an expression for the term in everyday language. In Germany , a 24-hour time interval is also called a whole or full day , in Sweden it is called dygn , in Norway and Denmark døgn - Danish dag "day" stands for daytime - and in the Netherlands it is etmaal . Only the length is defined as "around the clock", the beginning or end of the period are not defined.

See also

• Ivory prism from Nineveh

literature

• Hermann Hunger , David Pingree : Astral sciences in Mesopotamia . In: Bertold Spuler : Handbook of Oriental Studies . Department 1: The Near and Middle East . Volume 44. Brill, Leiden 1999, ISBN 90-04-10127-6 , pp. 113-117.