F ive kilometers north of the centre of Pontianak one can find the precise spot  at which the Equator bisects the city. In an instant the visitor can travel between the Northern & Southern hemispheres. Marking this spot is a monument founded in 1928 by Dutch Astronomical Expedition. Ten years later, the "Monument Khatulistiwa" was further developed by an Indonesia architect by the name Sylaban.A unique natural phenomena cam be observed twice a year at the side of the monument. During the vernal & Autumnal Equinox (21 - 23 March and September) the path of the sun over the monument is such that exactly at noon and no shadow is cast by the monument's spire. This Solar Culmination is visible for is period of only 5 - 10 minutes