On Fri, 7 Jun 2013 12:12:01 -0400, John Gilmore wrote:
>
>Never, never try to increment or decrement a calendar date
>programmatically: that way madness lies. Conceptial confusion lies
>there too: there is no xx.xx.60 UTC
>
From:
http://datacenter.iers.org/somos/rest/document/body/tx13iers.8q2/bulletinc-043.txt
A positive leap second will be introduced at the end of June 2012.
The sequence of dates of the UTC second markers will be:
2012 June 30, 23h 59m 59s
2012 June 30, 23h 59m 60s
2012 July 1, 0h 0m 0s
From:
ftp://tycho.usno.navy.mil/pub/gps/leapsecnanu.txt
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2012034
SUBJ: LEAP SECOND
1. CONDITION: THE INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS
SERVICE (IERS) HAS ANNOUNCED THE INTRODUCTION OF A LEAP SECOND TO
OCCUR AT THE END OF JUN 2012
2. COORDINATED UNIVERSAL TIME (UTC) WILL SEQUENCE AS FOLLOWS:
30 JUN 2012 23 HOURS 59 MINUTES 59 SECONDS
30 JUN 2012 23 HOURS 59 MINUTES 60 SECONDS
01 JUL 2012 00 HOURS 00 MINUTES 00 SECONDS
From:
http://www.nist.gov/pml/div688/leapseconds.cfm
When do leap seconds occur?
Leap seconds have always occurred at the end of December or the end of June, on
the last second of the UTC day. The designation of the sequence of seconds is:
23h 59m 59s
23h 59m 60s
00h 00m 00s
I consider these highly authoriitative sources. What's your source
of information? I suspect it comes from the same culture that
decrees the prefix "Mega" stands for 1,048,576.
-- gil
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