LEAP SECOND inserted into Co-ordinated Universal Time
December 31, 2008 23 hours 59 minutes 60 seconds.
Click black button just below to play the so-called "Leap Second" that was inserted into Co-ordinated Universal Time so that
it is synchronous with Astronomical and Scientific Time standards.
Recordist : Thomas Ashcraft
Recording Time Standard Station WWV at 5 MHz using two separate short wave radios.
Here is the Leap Second between Years 2005 and 2006.
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A "Leap Second" has been inserted into Coordinated Universal Time
at the recommendation of the International Time Bureau
at 23 hours 59 minutes 60 seconds UTC
December 31, 2005.
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Here is a recording of this Leap Second as broadcast on time station WWV short wave radio at 5 MHz.
Note : The Leap Second appears as a subtle extra sound beat
precisely before the loud beep at end of specimen!
Click the red button for the mp3. 16 seconds long. 253 kB size.
Click below for visual spectrograph of recording.
Click below for WWV radio announcement explaining the reason for the Leap Second insertion. mp3 1 minute 8 seconds 1 Mb
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