Fortnight

Related to yesterday's class, we can find in our dictionaries fortnight translated as quincena, dos semanas, and the question is ' is it fourteen or fifteen days?' Well, if we go to the etymology of the word, and being absolutely precise, it used ton mean 14 nights.

http://www.wordreference.com/es/translation.asp?tranword=fortnight

http://www.wordreference.com/definition/fortnight

http://oxforddictionaries.com/definition/fortnight?q=fortnight