The installation serves as inverted sun-clock, e ective on summer solstice in Zagreb. Small spherical wireframe holds 16 glossy acryl glass pieces. It is installed on the top of the Observatory to re ect the sunlight.
According to the Earth’s rotation the re ection of the sunlight is visible from particular locations on the balcony at particular time of the day. The position from which the glare is visible indicates approximate hour.