Wednesday 30 June 2021

saut de seconde

Introduced for the first time on this day in 1972 and originally delegated to the Bureau International de l’Heure (BIH, the International Time Bureau at the Paris Observatory) to schedule their addition or subtraction, leap seconds (see also) are a way to adjust Universal Coordinated Time and synchronise the invariable atomic clocks that informs most civilian timekeeping with observed solar time, the Earth’s rotation prone to go off-kilter a bit due to geological, climatic changes or meteor impacts. Though implemented as a means to ensure accuracy and uniformity in an increasing interconnected and networked world and announced six months in advance, the irregularity of leap seconds can also reveal flaws in underlying programming, the pictured time-stamp causing Linux-based systems to crash back on that date.