The hours of darkness between sunset and sunrise; the night.
Pertaining to nighttime; appropriate to the night.
Happening during the night.
The ninth hour after dawn (about 3 pm).
The notional first-quarter day of a Roman month, occurring on the 7th day of the four original 31-day months (March, May, Quintilis or July, and October) and on the 5th day of all other months.
The divine office appointed to the hour.