[87643] in North American Network Operators' Group
Leap second reminder
daemon@ATHENA.MIT.EDU (Kevin Day)
Sat Dec 31 12:59:01 2005
To: nanog@nanog.org
From: Kevin Day <toasty@dragondata.com>
Date: Sat, 31 Dec 2005 11:58:26 -0600
Errors-To: owner-nanog@merit.edu
Just a reminder, at midnight UTC there's a leap second added to most
time systems.
Some time systems will stop the clock at 23:59:59.999999 for 1
second, some will display 23:59:60 for a second.
Since the last leap second (1998), "leap second aware" time keeping
systems(NTP, GPS, etc) have become much more prevalent, so it's much
more likely this time that applications and NTP sync'ed devices will
see a leap second happen(rather than have them manually corrected
later, or not corrected at all). But, I'm not too sure how well
everyone has tested applications and devices for how they handle the
clock stopping for a second OR an "invalid" time of 23:59:60.
If anyone sees anything die at 00:00:00UTC I'd be interested to know.
-- Kevin
