Timearcs open and close around people all the time but only for nanoseconds so most people cannot perceive them. Ivar, Timewalker explains that they are responsible for the disappearance of many household objects such as keys, combs, sunglasses and lighters. Ivar is able to track the openings using his Tachyon Compass. Ivar also created a schematic and map to predict when and where the next timearc/s will occur.