Leap Second

hairyfucker

Turgid Member
Sep 10, 2005
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What are you going to do (or what did you do) for your extra second this year?

Dec 31 2008 will have an extra second added to compensate for the slightly inexact movement of the earth.


Reference info:

The first leap second was inserted into the UTC time scale on June 30, 1972. Leap seconds are used to keep the difference between UT1 and UTC to within ±0.9 s. The table below lists all leap seconds that have already occurred, or are scheduled to occur.

All leap seconds listed in the table are positive leap seconds, which means an extra second is inserted into the UTC time scale. The sequence of events is:

23h 59m 59s - 23h 59m 60s - 00h 00m 00s

[FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]Leap Seconds Inserted into the UTC Time Scale[/FONT]
Date MJD
2008-12-31 54831
2005-12-31 53735
1998-12-31 51178
1997-06-30 50629
1995-12-31 50082
1994-06-30 49533
1993-06-30 49168
1992-06-30 48803
1990-12-31 48256
1989-12-31 47891
1987-12-31 47160
1985-06-30 46246
1983-06-30 45515
1982-06-30 45150
1981-06-30 44785
1979-12-31 44238
1978-12-31 43873
1977-12-31 43508
1976-12-31 43143
1975-12-31 42777
1974-12-31 42412
1973-12-31 42047
1972-12-31 41682
1972-06-30 41498
 
Where eternity is reckoned
There's a lifetime in a second
 
Note, too, that the leap-second was added just before midnight UTC (okay, think GMT). Which would have put it just before 7pm Eastern Time yesterday evening, IIRC.