Nocturnal, Italy, 17th century. A nocturnal is an instrument used to determine the local time based on the relative positions of two or more stars in the night sky.
Wonderful and ancient Medieval clock in Wells, Somerset Cathedral, England. It dates from the 14th century. It is an astronomic clock showing not only the time but also the phases of the moon, the motion of both sun and moon and the time since the last new moon.
Nocturnal and Sundial, French, c. 1600 Nocturnal face