Leap second granted extra time : Nature News & Comment

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Alternative version of image:Wooden hourglass ...Image via Wikipedia
Leap second granted extra time : Nature News & Comment:

"Since 1972, international time zones have been defined against Coordinated Universal Time (UTC), which is based on signals averaged from around 400 atomic clocks. Leap seconds are added in at a rate of about one minute every 60-90 years. But nations disagree about whether the second is actually needed"



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