It was to St. Ambrose in the 4th century, among others. History is a bitch, ain't it? It doesn't go away when you want it to!
Take it up with him.
Quote:But Scripture established a law that twenty-four
hours, including both day and night, should be given the
name of day only, as if one were to say the length of one day
is twenty-four hours in extent. In such fashion, also, is the
generation of men reckoned which is understood to include
that of women, also. Because what is secondary is bound up
with what is primary, the nights in this reckoning are con-
sidered to be component parts of the days that are counted.
Ambrose of Milan 4th century "The Hexameron"
Take it up with him.