June 30, 2015
Since 1967, (click here) when clocks went atomic, human timekeeping has been independent of the earth’s rotation. The problem is, the planet is slowing down and clocks are not. So every few years, to get everything back in sync, scientists add a second. They’ve done it 25 times since 1972. The last time was 2012, but that was on a weekend. June 30 will be the first leap second during trading hours since markets went electronic....
To scientists it is called a hiatus.
Since 1967, (click here) when clocks went atomic, human timekeeping has been independent of the earth’s rotation. The problem is, the planet is slowing down and clocks are not. So every few years, to get everything back in sync, scientists add a second. They’ve done it 25 times since 1972. The last time was 2012, but that was on a weekend. June 30 will be the first leap second during trading hours since markets went electronic....
To scientists it is called a hiatus.
