Why June 30 will get an extra second Post a Comment The day will officially be a bit longer than usual on Tuesday, June 30, 2015, because an extra second, or 'leap' second, will be added. Baca Juga340 undiscovered meteorite impact sites on Earth, geologists calculateRestored streams take 25 years or longer to recoverWater used for hydraulic fracturing varies widely across United States Read More Share : Post a Comment for "Why June 30 will get an extra second"
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