The year 2015 will be 1second longer than usual. On June 30, the world will have a 'leap second' added to our universal time standered.
Leap seconds are added every few years because the speed of Earth's rotation varies slightly compared to the accuracy of atomic clocks.
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RandomAstonishing facts summed up into a handbook from diverse websites crammed into a 200 page book. Check out sequal- #Factz2
