Our basic time units – days, months, and years – and their astronomical definition are demonstrated at the start of the exhibition. A 3-meter electromechanical tellurium shows how the Moon orbits Earth, and the Earth-Moon-system orbits the Sun. The functions of the solar and lunar calendar, based on the orbits of the Earth and the Moon, are demonstrated through LED ring lights.
Furthermore, the exhibition illustrates the development of timekeeping and navigational instruments. The Time exhibition displays original, fully functional instruments. Each and every artifact is a milestone of the history of technology, from simple sundials and water clocks to the complex mechanical clocks of the 19th and 20th century. Special exhibits like the Riefler Clock – the most exact mechanical clock ever built – have not only been restored to full condition, but also prepared to allow visitors a look into the mechanical inner workings of the clock.
The final destination of the journey through timekeeping history is the atomic clock of the Makkah Time Institute, the most exact timekeeping instrument ever built by mankind. Here, visitors have the chance to receive their Makkah Time Stamp with the exactitude of a nanosecond.