Us Naval Observatory
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Man Carrying Weapon Arrested Outside Kamala Harris' Residence: Report
Washington DC police on Wednesday (local time) arrested a Texas man outside Vice President Kamala Harris' official residence, the US Naval Observatory, with a rifle and ammunition recovered from his vehicle.
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2016 To Be One Second Longer: US Naval Observatory
On December 31 this year, a "leap second" will be added to the world's clocks at 23 hours, 59 minutes 59 seconds Coordinated Universal Time, the US Naval Observatory has announced.
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New atomic clock is good for accurate timekeeping for 300 million years
The clocks uses cesium atom - which is more than 9.1 billion vibrations per second to determine the exact length of a second.
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Man Carrying Weapon Arrested Outside Kamala Harris' Residence: Report
Washington DC police on Wednesday (local time) arrested a Texas man outside Vice President Kamala Harris' official residence, the US Naval Observatory, with a rifle and ammunition recovered from his vehicle.
-
2016 To Be One Second Longer: US Naval Observatory
On December 31 this year, a "leap second" will be added to the world's clocks at 23 hours, 59 minutes 59 seconds Coordinated Universal Time, the US Naval Observatory has announced.
-
New atomic clock is good for accurate timekeeping for 300 million years
The clocks uses cesium atom - which is more than 9.1 billion vibrations per second to determine the exact length of a second.
