Located above the peristyle in the Nave, facing the Great Staircase, the World time clock kept time for many years as events unfolded in the Grand Palais. Placed on a balcony with an area of 3,700 sq. ft., the world time clock was made around 1878, and is composed of twelve dials for the timezones of the main world capitals.
The clock was designed by Armand-François Collin who had notably devised the chimes for the church of Saint-Germain l'Auxerrois and been awarded the Légion d'honneur at the 1878 Universal Exhibition. It was then that he designed the famous world time clock for the Palais de l'industrie. When the latter was demolished the clock was moved to the Nave of the Grand Palais where it kept time till 2001.